Add more tests to ASSERT_STATUS_CHECKED (3), API change (#7715)

Summary:
Third batch of adding more tests to ASSERT_STATUS_CHECKED.

* db_compaction_filter_test
* db_compaction_test
* db_dynamic_level_test
* db_inplace_update_test
* db_sst_test
* db_tailing_iter_test
* db_io_failure_test

Also update GetApproximateSizes APIs to all return Status.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7715

Reviewed By: jay-zhuang

Differential Revision: D25806896

Pulled By: pdillinger

fbshipit-source-id: 6cb9d62ba5a756c645812754c596ad3995d7c262

HISTORY.md

@@ -7,6 +7,10 @@
 ### Behavior Changes
 * Attempting to write a merge operand without explicitly configuring `merge_operator` now fails immediately, causing the DB to enter read-only mode. Previously, failure was deferred until the `merge_operator` was needed by a user read or a background operation.
 
+### API Changes
+* `rocksdb_approximate_sizes` and `rocksdb_approximate_sizes_cf` in the C API now requires an error pointer (`char** errptr`) for receiving any error.
+* All overloads of DB::GetApproximateSizes now return Status, so that any failure to obtain the sizes is indicated to the caller.
+
 ### Bug Fixes
 * Truncated WALs ending in incomplete records can no longer produce gaps in the recovered data when `WALRecoveryMode::kPointInTimeRecovery` is used. Gaps are still possible when WALs are truncated exactly on record boundaries; for complete protection, users should enable `track_and_verify_wals_in_manifest`.
 * Fix a bug where compressed blocks read by MultiGet are not inserted into the compressed block cache when use_direct_reads = true.

Makefile

@@ -612,7 +612,12 @@ ifdef ASSERT_STATUS_CHECKED
 		db_blob_basic_test \
 		db_blob_index_test \
 		db_block_cache_test \
+		db_compaction_test \
+		db_compaction_filter_test \
+		db_dynamic_level_test \
 		db_flush_test \
+		db_inplace_update_test \
+		db_io_failure_test \
 		db_iterator_test \
 		db_logical_block_size_cache_test \
 		db_memtable_test \
@@ -629,6 +634,7 @@ ifdef ASSERT_STATUS_CHECKED
 		deletefile_test \
 		external_sst_file_test \
 		options_file_test \
+		db_sst_test \
 		db_statistics_test \
 		db_table_properties_test \
 		db_tailing_iter_test \

db/c.cc

@@ -1388,34 +1388,39 @@ char* rocksdb_property_value_cf(
   }
 }
 
-void rocksdb_approximate_sizes(
-    rocksdb_t* db,
-    int num_ranges,
-    const char* const* range_start_key, const size_t* range_start_key_len,
-    const char* const* range_limit_key, const size_t* range_limit_key_len,
-    uint64_t* sizes) {
+void rocksdb_approximate_sizes(rocksdb_t* db, int num_ranges,
+                               const char* const* range_start_key,
+                               const size_t* range_start_key_len,
+                               const char* const* range_limit_key,
+                               const size_t* range_limit_key_len,
+                               uint64_t* sizes, char** errptr) {
   Range* ranges = new Range[num_ranges];
   for (int i = 0; i < num_ranges; i++) {
     ranges[i].start = Slice(range_start_key[i], range_start_key_len[i]);
     ranges[i].limit = Slice(range_limit_key[i], range_limit_key_len[i]);
   }
-  db->rep->GetApproximateSizes(ranges, num_ranges, sizes);
+  Status s = db->rep->GetApproximateSizes(ranges, num_ranges, sizes);
+  if (!s.ok()) {
+    SaveError(errptr, s);
+  }
   delete[] ranges;
 }
 
 void rocksdb_approximate_sizes_cf(
-    rocksdb_t* db,
-    rocksdb_column_family_handle_t* column_family,
-    int num_ranges,
-    const char* const* range_start_key, const size_t* range_start_key_len,
-    const char* const* range_limit_key, const size_t* range_limit_key_len,
-    uint64_t* sizes) {
+    rocksdb_t* db, rocksdb_column_family_handle_t* column_family,
+    int num_ranges, const char* const* range_start_key,
+    const size_t* range_start_key_len, const char* const* range_limit_key,
+    const size_t* range_limit_key_len, uint64_t* sizes, char** errptr) {
   Range* ranges = new Range[num_ranges];
   for (int i = 0; i < num_ranges; i++) {
     ranges[i].start = Slice(range_start_key[i], range_start_key_len[i]);
     ranges[i].limit = Slice(range_limit_key[i], range_limit_key_len[i]);
   }
-  db->rep->GetApproximateSizes(column_family->rep, ranges, num_ranges, sizes);
+  Status s = db->rep->GetApproximateSizes(column_family->rep, ranges,
+                                          num_ranges, sizes);
+  if (!s.ok()) {
+    SaveError(errptr, s);
+  }
   delete[] ranges;
 }
 

db/c_test.c

@@ -988,7 +988,9 @@ int main(int argc, char** argv) {
                   &err);
       CheckNoError(err);
     }
-    rocksdb_approximate_sizes(db, 2, start, start_len, limit, limit_len, sizes);
+    rocksdb_approximate_sizes(db, 2, start, start_len, limit, limit_len, sizes,
+                              &err);
+    CheckNoError(err);
     CheckCondition(sizes[0] > 0);
     CheckCondition(sizes[1] > 0);
   }

db/compaction/compaction_job_stats_test.cc

@@ -297,15 +297,14 @@ class CompactionJobStatsTest : public testing::Test,
     return result;
   }
 
-  uint64_t Size(const Slice& start, const Slice& limit, int cf = 0) {
+  Status Size(uint64_t* size, const Slice& start, const Slice& limit,
+              int cf = 0) {
     Range r(start, limit);
-    uint64_t size;
     if (cf == 0) {
-      db_->GetApproximateSizes(&r, 1, &size);
+      return db_->GetApproximateSizes(&r, 1, size);
     } else {
-      db_->GetApproximateSizes(handles_[1], &r, 1, &size);
+      return db_->GetApproximateSizes(handles_[1], &r, 1, size);
     }
-    return size;
   }
 
   void Compact(int cf, const Slice& start, const Slice& limit,

db/db_compaction_filter_test.cc

@@ -42,7 +42,7 @@ class DBTestCompactionFilterWithCompactParam
         option_config_ == kUniversalSubcompactions) {
       assert(options.max_subcompactions > 1);
     }
-    TryReopen(options);
+    Reopen(options);
   }
 };
 
@@ -276,7 +276,7 @@ TEST_F(DBTestCompactionFilter, CompactionFilter) {
   for (int i = 0; i < 100000; i++) {
     char key[100];
     snprintf(key, sizeof(key), "B%010d", i);
-    Put(1, key, value);
+    ASSERT_OK(Put(1, key, value));
   }
   ASSERT_OK(Flush(1));
 
@@ -284,10 +284,10 @@ TEST_F(DBTestCompactionFilter, CompactionFilter) {
   // the compaction is each level invokes the filter for
   // all the keys in that level.
   cfilter_count = 0;
-  dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]);
+  ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]));
   ASSERT_EQ(cfilter_count, 100000);
   cfilter_count = 0;
-  dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]);
+  ASSERT_OK(dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]));
   ASSERT_EQ(cfilter_count, 100000);
 
   ASSERT_EQ(NumTableFilesAtLevel(0, 1), 0);
@@ -321,6 +321,7 @@ TEST_F(DBTestCompactionFilter, CompactionFilter) {
       }
       iter->Next();
     }
+    ASSERT_OK(iter->status());
   }
   ASSERT_EQ(total, 100000);
   ASSERT_EQ(count, 0);
@@ -337,10 +338,10 @@ TEST_F(DBTestCompactionFilter, CompactionFilter) {
   // means that all keys should pass at least once
   // via the compaction filter
   cfilter_count = 0;
-  dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]);
+  ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]));
   ASSERT_EQ(cfilter_count, 100000);
   cfilter_count = 0;
-  dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]);
+  ASSERT_OK(dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]));
   ASSERT_EQ(cfilter_count, 100000);
   ASSERT_EQ(NumTableFilesAtLevel(0, 1), 0);
   ASSERT_EQ(NumTableFilesAtLevel(1, 1), 0);
@@ -369,10 +370,10 @@ TEST_F(DBTestCompactionFilter, CompactionFilter) {
   // verify that at the end of the compaction process,
   // nothing is left.
   cfilter_count = 0;
-  dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]);
+  ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]));
   ASSERT_EQ(cfilter_count, 100000);
   cfilter_count = 0;
-  dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]);
+  ASSERT_OK(dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]));
   ASSERT_EQ(cfilter_count, 0);
   ASSERT_EQ(NumTableFilesAtLevel(0, 1), 0);
   ASSERT_EQ(NumTableFilesAtLevel(1, 1), 0);
@@ -387,6 +388,7 @@ TEST_F(DBTestCompactionFilter, CompactionFilter) {
       count++;
       iter->Next();
     }
+    ASSERT_OK(iter->status());
     ASSERT_EQ(count, 0);
   }
 
@@ -427,9 +429,9 @@ TEST_F(DBTestCompactionFilter, CompactionFilterDeletesAll) {
   // put some data
   for (int table = 0; table < 4; ++table) {
     for (int i = 0; i < 10 + table; ++i) {
-      Put(ToString(table * 100 + i), "val");
+      ASSERT_OK(Put(ToString(table * 100 + i), "val"));
     }
-    Flush();
+    ASSERT_OK(Flush());
   }
 
   // this will produce empty file (delete compaction filter)
@@ -440,6 +442,7 @@ TEST_F(DBTestCompactionFilter, CompactionFilterDeletesAll) {
 
   Iterator* itr = db_->NewIterator(ReadOptions());
   itr->SeekToFirst();
+  ASSERT_OK(itr->status());
   // empty db
   ASSERT_TRUE(!itr->Valid());
 
@@ -463,25 +466,25 @@ TEST_P(DBTestCompactionFilterWithCompactParam,
   for (int i = 0; i < 100001; i++) {
     char key[100];
     snprintf(key, sizeof(key), "B%010d", i);
-    Put(1, key, value);
+    ASSERT_OK(Put(1, key, value));
   }
 
   // push all files to  lower levels
   ASSERT_OK(Flush(1));
   if (option_config_ != kUniversalCompactionMultiLevel &&
       option_config_ != kUniversalSubcompactions) {
-    dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]);
-    dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]);
+    ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]));
+    ASSERT_OK(dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]));
   } else {
-    dbfull()->CompactRange(CompactRangeOptions(), handles_[1], nullptr,
-                           nullptr);
+    ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), handles_[1],
+                                     nullptr, nullptr));
   }
 
   // re-write all data again
   for (int i = 0; i < 100001; i++) {
     char key[100];
     snprintf(key, sizeof(key), "B%010d", i);
-    Put(1, key, value);
+    ASSERT_OK(Put(1, key, value));
   }
 
   // push all files to  lower levels. This should
@@ -489,11 +492,11 @@ TEST_P(DBTestCompactionFilterWithCompactParam,
   ASSERT_OK(Flush(1));
   if (option_config_ != kUniversalCompactionMultiLevel &&
       option_config_ != kUniversalSubcompactions) {
-    dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]);
-    dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]);
+    ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]));
+    ASSERT_OK(dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]));
   } else {
-    dbfull()->CompactRange(CompactRangeOptions(), handles_[1], nullptr,
-                           nullptr);
+    ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), handles_[1],
+                                     nullptr, nullptr));
   }
 
   // verify that all keys now have the new value that
@@ -531,7 +534,7 @@ TEST_F(DBTestCompactionFilter, CompactionFilterWithMergeOperator) {
   ASSERT_OK(Flush());
   std::string newvalue = Get("foo");
   ASSERT_EQ(newvalue, three);
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+  ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
   newvalue = Get("foo");
   ASSERT_EQ(newvalue, three);
 
@@ -539,12 +542,12 @@ TEST_F(DBTestCompactionFilter, CompactionFilterWithMergeOperator) {
   // merge keys.
   ASSERT_OK(db_->Put(WriteOptions(), "bar", two));
   ASSERT_OK(Flush());
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+  ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
   newvalue = Get("bar");
   ASSERT_EQ("NOT_FOUND", newvalue);
   ASSERT_OK(db_->Merge(WriteOptions(), "bar", two));
   ASSERT_OK(Flush());
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+  ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
   newvalue = Get("bar");
   ASSERT_EQ(two, two);
 
@@ -555,7 +558,7 @@ TEST_F(DBTestCompactionFilter, CompactionFilterWithMergeOperator) {
   ASSERT_OK(Flush());
   newvalue = Get("foobar");
   ASSERT_EQ(newvalue, three);
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+  ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
   newvalue = Get("foobar");
   ASSERT_EQ(newvalue, three);
 
@@ -568,7 +571,7 @@ TEST_F(DBTestCompactionFilter, CompactionFilterWithMergeOperator) {
   ASSERT_OK(Flush());
   newvalue = Get("barfoo");
   ASSERT_EQ(newvalue, four);
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+  ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
   newvalue = Get("barfoo");
   ASSERT_EQ(newvalue, four);
 }
@@ -590,21 +593,21 @@ TEST_F(DBTestCompactionFilter, CompactionFilterContextManual) {
     for (int i = 0; i < num_keys_per_file; i++) {
       char key[100];
       snprintf(key, sizeof(key), "B%08d%02d", i, j);
-      Put(key, value);
+      ASSERT_OK(Put(key, value));
     }
-    dbfull()->TEST_FlushMemTable();
+    ASSERT_OK(dbfull()->TEST_FlushMemTable());
     // Make sure next file is much smaller so automatic compaction will not
     // be triggered.
     num_keys_per_file /= 2;
   }
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
 
   // Force a manual compaction
   cfilter_count = 0;
   filter->expect_manual_compaction_.store(true);
   filter->expect_full_compaction_.store(true);
   filter->expect_cf_id_.store(0);
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+  ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
   ASSERT_EQ(cfilter_count, 700);
   ASSERT_EQ(NumSortedRuns(0), 1);
   ASSERT_TRUE(filter->compaction_filter_created());
@@ -654,14 +657,14 @@ TEST_F(DBTestCompactionFilter, CompactionFilterContextCfId) {
     for (int i = 0; i < num_keys_per_file; i++) {
       char key[100];
       snprintf(key, sizeof(key), "B%08d%02d", i, j);
-      Put(1, key, value);
+      ASSERT_OK(Put(1, key, value));
     }
-    Flush(1);
+    ASSERT_OK(Flush(1));
     // Make sure next file is much smaller so automatic compaction will not
     // be triggered.
     num_keys_per_file /= 2;
   }
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
 
   ASSERT_TRUE(filter->compaction_filter_created());
 }
@@ -680,9 +683,9 @@ TEST_F(DBTestCompactionFilter, CompactionFilterIgnoreSnapshot) {
   const Snapshot* snapshot = nullptr;
   for (int table = 0; table < 4; ++table) {
     for (int i = 0; i < 10; ++i) {
-      Put(ToString(table * 100 + i), "val");
+      ASSERT_OK(Put(ToString(table * 100 + i), "val"));
     }
-    Flush();
+    ASSERT_OK(Flush());
 
     if (table == 0) {
       snapshot = db_->GetSnapshot();
@@ -702,6 +705,7 @@ TEST_F(DBTestCompactionFilter, CompactionFilterIgnoreSnapshot) {
     read_options.snapshot = snapshot;
     std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
     iter->SeekToFirst();
+    ASSERT_OK(iter->status());
     int count = 0;
     while (iter->Valid()) {
       count++;
@@ -710,6 +714,7 @@ TEST_F(DBTestCompactionFilter, CompactionFilterIgnoreSnapshot) {
     ASSERT_EQ(count, 6);
     read_options.snapshot = nullptr;
     std::unique_ptr<Iterator> iter1(db_->NewIterator(read_options));
+    ASSERT_OK(iter1->status());
     iter1->SeekToFirst();
     count = 0;
     while (iter1->Valid()) {
@@ -740,9 +745,9 @@ TEST_F(DBTestCompactionFilter, SkipUntil) {
     for (int i = table * 6; i < 39 + table * 11; ++i) {
       char key[100];
       snprintf(key, sizeof(key), "%010d", table * 100 + i);
-      Put(key, std::to_string(table * 1000 + i));
+      ASSERT_OK(Put(key, std::to_string(table * 1000 + i)));
     }
-    Flush();
+    ASSERT_OK(Flush());
   }
 
   cfilter_skips = 0;
@@ -781,10 +786,10 @@ TEST_F(DBTestCompactionFilter, SkipUntilWithBloomFilter) {
   options.create_if_missing = true;
   DestroyAndReopen(options);
 
-  Put("0000000010", "v10");
-  Put("0000000020", "v20");  // skipped
-  Put("0000000050", "v50");
-  Flush();
+  ASSERT_OK(Put("0000000010", "v10"));
+  ASSERT_OK(Put("0000000020", "v20"));  // skipped
+  ASSERT_OK(Put("0000000050", "v50"));
+  ASSERT_OK(Flush());
 
   cfilter_skips = 0;
   EXPECT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
@@ -822,13 +827,13 @@ TEST_F(DBTestCompactionFilter, IgnoreSnapshotsFalse) {
   options.compaction_filter = new TestNotSupportedFilter();
   DestroyAndReopen(options);
 
-  Put("a", "v10");
-  Put("z", "v20");
-  Flush();
+  ASSERT_OK(Put("a", "v10"));
+  ASSERT_OK(Put("z", "v20"));
+  ASSERT_OK(Flush());
 
-  Put("a", "v10");
-  Put("z", "v20");
-  Flush();
+  ASSERT_OK(Put("a", "v10"));
+  ASSERT_OK(Put("z", "v20"));
+  ASSERT_OK(Flush());
 
   // Comapction should fail because IgnoreSnapshots() = false
   EXPECT_TRUE(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr)

db/db_dynamic_level_test.cc

@@ -102,7 +102,8 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesBase) {
       }
 
       // Test compact range works
-      dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+      ASSERT_OK(
+          dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
       // All data should be in the last level.
       ColumnFamilyMetaData cf_meta;
       db_->GetColumnFamilyMetaData(&cf_meta);
@@ -166,8 +167,8 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesBase2) {
   ASSERT_OK(dbfull()->SetOptions({
       {"disable_auto_compactions", "false"},
   }));
-  Flush();
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(Flush());
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
   ASSERT_TRUE(db_->GetIntProperty("rocksdb.base-level", &int_prop));
   ASSERT_EQ(4U, int_prop);
 
@@ -184,8 +185,8 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesBase2) {
   ASSERT_OK(dbfull()->SetOptions({
       {"disable_auto_compactions", "false"},
   }));
-  Flush();
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(Flush());
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
   ASSERT_TRUE(db_->GetIntProperty("rocksdb.base-level", &int_prop));
   ASSERT_EQ(3U, int_prop);
   ASSERT_TRUE(db_->GetProperty("rocksdb.num-files-at-level1", &str_prop));
@@ -205,8 +206,8 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesBase2) {
   ASSERT_OK(dbfull()->SetOptions({
       {"disable_auto_compactions", "false"},
   }));
-  Flush();
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(Flush());
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
   ASSERT_TRUE(db_->GetIntProperty("rocksdb.base-level", &int_prop));
   ASSERT_EQ(3U, int_prop);
 
@@ -234,8 +235,8 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesBase2) {
   }));
 
   TEST_SYNC_POINT("DynamicLevelMaxBytesBase2:0");
-  Flush();
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(Flush());
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
   ASSERT_TRUE(db_->GetIntProperty("rocksdb.base-level", &int_prop));
   ASSERT_EQ(2U, int_prop);
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
@@ -264,7 +265,7 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesBase2) {
   }
   TEST_SYNC_POINT("DynamicLevelMaxBytesBase2:2");
 
-  Flush();
+  ASSERT_OK(Flush());
 
   thread.join();
 
@@ -302,7 +303,7 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesCompactRange) {
   DestroyAndReopen(options);
 
   // Compact against empty DB
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+  ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
 
   uint64_t int_prop;
   std::string str_prop;
@@ -316,13 +317,13 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesCompactRange) {
     ASSERT_OK(
         Put(Key(static_cast<int>(rnd.Uniform(kMaxKey))), rnd.RandomString(80)));
   }
-  Flush();
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(Flush());
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
   if (NumTableFilesAtLevel(0) == 0) {
     // Make sure level 0 is not empty
     ASSERT_OK(
         Put(Key(static_cast<int>(rnd.Uniform(kMaxKey))), rnd.RandomString(80)));
-    Flush();
+    ASSERT_OK(Flush());
   }
 
   ASSERT_TRUE(db_->GetIntProperty("rocksdb.base-level", &int_prop));
@@ -343,7 +344,7 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesCompactRange) {
       });
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
 
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+  ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
   ASSERT_EQ(output_levels.size(), 2);
   ASSERT_TRUE(output_levels.find(3) != output_levels.end());
   ASSERT_TRUE(output_levels.find(4) != output_levels.end());
@@ -389,8 +390,8 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesBaseInc) {
     PutFixed32(&value, static_cast<uint32_t>(i));
     ASSERT_OK(Put(Key(i), value));
   }
-  Flush();
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(Flush());
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
 
   ASSERT_EQ(non_trivial, 0);
@@ -449,7 +450,7 @@ TEST_F(DBTestDynamicLevel, DISABLED_MigrateToDynamicLevelMaxBytesBase) {
     ASSERT_OK(Delete(Key(i / 10)));
   }
   verify_func(total_keys, false);
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
 
   options.level_compaction_dynamic_level_bytes = true;
   options.disable_auto_compactions = true;
@@ -464,7 +465,7 @@ TEST_F(DBTestDynamicLevel, DISABLED_MigrateToDynamicLevelMaxBytesBase) {
     CompactRangeOptions compact_options;
     compact_options.change_level = true;
     compact_options.target_level = options.num_levels - 1;
-    dbfull()->CompactRange(compact_options, nullptr, nullptr);
+    ASSERT_OK(dbfull()->CompactRange(compact_options, nullptr, nullptr));
     compaction_finished.store(true);
   });
   do {
@@ -484,7 +485,7 @@ TEST_F(DBTestDynamicLevel, DISABLED_MigrateToDynamicLevelMaxBytesBase) {
   }
 
   verify_func(total_keys2, false);
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
   verify_func(total_keys2, false);
 
   // Base level is not level 1

db/db_impl/db_impl.cc

@@ -306,19 +306,22 @@ Status DBImpl::ResumeImpl(DBRecoverContext context) {
   mutex_.AssertHeld();
   WaitForBackgroundWork();
 
-  Status bg_error = error_handler_.GetBGError();
   Status s;
   if (shutdown_initiated_) {
     // Returning shutdown status to SFM during auto recovery will cause it
     // to abort the recovery and allow the shutdown to progress
     s = Status::ShutdownInProgress();
   }
-  if (s.ok() && bg_error.severity() > Status::Severity::kHardError) {
+
+  if (s.ok()) {
+    Status bg_error = error_handler_.GetBGError();
+    if (bg_error.severity() > Status::Severity::kHardError) {
       ROCKS_LOG_INFO(
           immutable_db_options_.info_log,
           "DB resume requested but failed due to Fatal/Unrecoverable error");
       s = bg_error;
     }
+  }
 
   // Make sure the IO Status stored in version set is set to OK.
   bool file_deletion_disabled = !IsFileDeletionsEnabled();
@@ -392,6 +395,11 @@ Status DBImpl::ResumeImpl(DBRecoverContext context) {
   FindObsoleteFiles(&job_context, true);
   if (s.ok()) {
     s = error_handler_.ClearBGError();
+  } else {
+    // NOTE: this is needed to pass ASSERT_STATUS_CHECKED
+    // in the DBSSTTest.DBWithMaxSpaceAllowedRandomized test.
+    // See https://github.com/facebook/rocksdb/pull/7715#issuecomment-754947952
+    error_handler_.GetRecoveryError().PermitUncheckedError();
   }
   mutex_.Unlock();
 
@@ -408,6 +416,12 @@ Status DBImpl::ResumeImpl(DBRecoverContext context) {
     if (file_deletion_disabled) {
       // Always return ok
       s = EnableFileDeletions(/*force=*/true);
+      if (!s.ok()) {
+        ROCKS_LOG_INFO(
+            immutable_db_options_.info_log,
+            "DB resume requested but could not enable file deletions [%s]",
+            s.ToString().c_str());
+      }
     }
     ROCKS_LOG_INFO(immutable_db_options_.info_log, "Successfully resumed DB");
   }
@@ -3573,7 +3587,7 @@ Status DBImpl::DeleteFile(std::string name) {
 Status DBImpl::DeleteFilesInRanges(ColumnFamilyHandle* column_family,
                                    const RangePtr* ranges, size_t n,
                                    bool include_end) {
-  Status status;
+  Status status = Status::OK();
   auto cfh = static_cast_with_check<ColumnFamilyHandleImpl>(column_family);
   ColumnFamilyData* cfd = cfh->cfd();
   VersionEdit edit;
@@ -3632,7 +3646,7 @@ Status DBImpl::DeleteFilesInRanges(ColumnFamilyHandle* column_family,
     }
     if (edit.GetDeletedFiles().empty()) {
       job_context.Clean();
-      return Status::OK();
+      return status;
     }
     input_version->Ref();
     status = versions_->LogAndApply(cfd, *cfd->GetLatestMutableCFOptions(),

db/db_impl/db_impl_compaction_flush.cc

@@ -35,8 +35,10 @@ bool DBImpl::EnoughRoomForCompaction(
     // Pass the current bg_error_ to SFM so it can decide what checks to
     // perform. If this DB instance hasn't seen any error yet, the SFM can be
     // optimistic and not do disk space checks
-    enough_room =
-        sfm->EnoughRoomForCompaction(cfd, inputs, error_handler_.GetBGError());
+    Status bg_error = error_handler_.GetBGError();
+    enough_room = sfm->EnoughRoomForCompaction(cfd, inputs, bg_error);
+    bg_error.PermitUncheckedError();  // bg_error is just a copy of the Status
+                                      // from the error_handler_
     if (enough_room) {
       *sfm_reserved_compact_space = true;
     }

db/db_io_failure_test.cc

@@ -43,11 +43,15 @@ TEST_F(DBIOFailureTest, DropWrites) {
           if (level > 0 && level == dbfull()->NumberLevels() - 1) {
             break;
           }
+          Status s =
               dbfull()->TEST_CompactRange(level, nullptr, nullptr, nullptr,
                                           true /* disallow trivial move */);
+          ASSERT_TRUE(s.ok() || s.IsCorruption());
         }
       } else {
+        Status s =
             dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+        ASSERT_TRUE(s.ok() || s.IsCorruption());
       }
     }
 
@@ -56,7 +60,8 @@ TEST_F(DBIOFailureTest, DropWrites) {
     ASSERT_EQ("5", property_value);
 
     env_->drop_writes_.store(false, std::memory_order_release);
-    ASSERT_LT(CountFiles(), num_files + 3);
+    const size_t count = CountFiles();
+    ASSERT_LT(count, num_files + 3);
 
     // Check that compaction attempts slept after errors
     // TODO @krad: Figure out why ASSERT_EQ 5 keeps failing in certain compiler
@@ -82,7 +87,8 @@ TEST_F(DBIOFailureTest, DropWritesFlush) {
     ASSERT_TRUE(db_->GetProperty("rocksdb.background-errors", &property_value));
     ASSERT_EQ("0", property_value);
 
-    dbfull()->TEST_FlushMemTable(true);
+    // ASSERT file is too short
+    ASSERT_TRUE(dbfull()->TEST_FlushMemTable(true).IsCorruption());
 
     ASSERT_TRUE(db_->GetProperty("rocksdb.background-errors", &property_value));
     ASSERT_EQ("1", property_value);
@@ -166,7 +172,7 @@ TEST_F(DBIOFailureTest, ManifestWriteError) {
     ASSERT_EQ("bar", Get("foo"));
 
     // Memtable compaction (will succeed)
-    Flush();
+    ASSERT_OK(Flush());
     ASSERT_EQ("bar", Get("foo"));
     const int last = 2;
     MoveFilesToLevel(2);
@@ -174,7 +180,8 @@ TEST_F(DBIOFailureTest, ManifestWriteError) {
 
     // Merging compaction (will fail)
     error_type->store(true, std::memory_order_release);
-    dbfull()->TEST_CompactRange(last, nullptr, nullptr);  // Should fail
+    ASSERT_NOK(
+        dbfull()->TEST_CompactRange(last, nullptr, nullptr));  // Should fail
     ASSERT_EQ("bar", Get("foo"));
 
     error_type->store(false, std::memory_order_release);
@@ -192,7 +199,13 @@ TEST_F(DBIOFailureTest, ManifestWriteError) {
 
     // Merging compaction (will fail)
     error_type->store(true, std::memory_order_release);
+    Status s =
         dbfull()->TEST_CompactRange(last, nullptr, nullptr);  // Should fail
+    if (iter == 0) {
+      ASSERT_OK(s);
+    } else {
+      ASSERT_TRUE(s.IsIOError());
+    }
     ASSERT_EQ("bar", Get("foo"));
 
     // Recovery: should not lose data
@@ -220,18 +233,15 @@ TEST_F(DBIOFailureTest, PutFailsParanoid) {
   options.paranoid_checks = true;
   DestroyAndReopen(options);
   CreateAndReopenWithCF({"pikachu"}, options);
-  Status s;
 
   ASSERT_OK(Put(1, "foo", "bar"));
   ASSERT_OK(Put(1, "foo1", "bar1"));
   // simulate error
   env_->log_write_error_.store(true, std::memory_order_release);
-  s = Put(1, "foo2", "bar2");
-  ASSERT_TRUE(!s.ok());
+  ASSERT_NOK(Put(1, "foo2", "bar2"));
   env_->log_write_error_.store(false, std::memory_order_release);
-  s = Put(1, "foo3", "bar3");
   // the next put should fail, too
-  ASSERT_TRUE(!s.ok());
+  ASSERT_NOK(Put(1, "foo3", "bar3"));
   // but we're still able to read
   ASSERT_EQ("bar", Get(1, "foo"));
 
@@ -244,12 +254,10 @@ TEST_F(DBIOFailureTest, PutFailsParanoid) {
   ASSERT_OK(Put(1, "foo1", "bar1"));
   // simulate error
   env_->log_write_error_.store(true, std::memory_order_release);
-  s = Put(1, "foo2", "bar2");
-  ASSERT_TRUE(!s.ok());
+  ASSERT_NOK(Put(1, "foo2", "bar2"));
   env_->log_write_error_.store(false, std::memory_order_release);
-  s = Put(1, "foo3", "bar3");
   // the next put should NOT fail
-  ASSERT_TRUE(s.ok());
+  ASSERT_OK(Put(1, "foo3", "bar3"));
 }
 #if !(defined NDEBUG) || !defined(OS_WIN)
 TEST_F(DBIOFailureTest, FlushSstRangeSyncError) {
@@ -269,14 +277,14 @@ TEST_F(DBIOFailureTest, FlushSstRangeSyncError) {
 
   DestroyAndReopen(options);
   CreateAndReopenWithCF({"pikachu"}, options);
-  Status s;
 
+  const char* io_error_msg = "range sync dummy error";
   std::atomic<int> range_sync_called(0);
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
       "SpecialEnv::SStableFile::RangeSync", [&](void* arg) {
         if (range_sync_called.fetch_add(1) == 0) {
           Status* st = static_cast<Status*>(arg);
-          *st = Status::IOError("range sync dummy error");
+          *st = Status::IOError(io_error_msg);
         }
       });
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
@@ -298,7 +306,9 @@ TEST_F(DBIOFailureTest, FlushSstRangeSyncError) {
   ASSERT_OK(Put(1, "foo3_2", rnd_str));
   ASSERT_OK(Put(1, "foo3_3", rnd_str));
   ASSERT_OK(Put(1, "foo4", "bar"));
-  dbfull()->TEST_WaitForFlushMemTable(handles_[1]);
+  Status s = dbfull()->TEST_WaitForFlushMemTable(handles_[1]);
+  ASSERT_TRUE(s.IsIOError());
+  ASSERT_STREQ(s.getState(), io_error_msg);
 
   // Following writes should fail as flush failed.
   ASSERT_NOK(Put(1, "foo2", "bar3"));
@@ -328,7 +338,6 @@ TEST_F(DBIOFailureTest, CompactSstRangeSyncError) {
   options.table_factory.reset(NewBlockBasedTableFactory(table_options));
   DestroyAndReopen(options);
   CreateAndReopenWithCF({"pikachu"}, options);
-  Status s;
 
   Random rnd(301);
   std::string rnd_str =
@@ -342,21 +351,22 @@ TEST_F(DBIOFailureTest, CompactSstRangeSyncError) {
   ASSERT_OK(Put(1, "foo1_1", rnd_str));
   ASSERT_OK(Put(1, "foo1_2", rnd_str));
   ASSERT_OK(Put(1, "foo1_3", rnd_str));
-  Flush(1);
+  ASSERT_OK(Flush(1));
   ASSERT_OK(Put(1, "foo", "bar"));
   ASSERT_OK(Put(1, "foo3_1", rnd_str));
   ASSERT_OK(Put(1, "foo3_2", rnd_str));
   ASSERT_OK(Put(1, "foo3_3", rnd_str));
   ASSERT_OK(Put(1, "foo4", "bar"));
-  Flush(1);
-  dbfull()->TEST_WaitForFlushMemTable(handles_[1]);
+  ASSERT_OK(Flush(1));
+  ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[1]));
 
+  const char* io_error_msg = "range sync dummy error";
   std::atomic<int> range_sync_called(0);
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
       "SpecialEnv::SStableFile::RangeSync", [&](void* arg) {
         if (range_sync_called.fetch_add(1) == 0) {
           Status* st = static_cast<Status*>(arg);
-          *st = Status::IOError("range sync dummy error");
+          *st = Status::IOError(io_error_msg);
         }
       });
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
@@ -365,7 +375,9 @@ TEST_F(DBIOFailureTest, CompactSstRangeSyncError) {
                                  {
                                      {"disable_auto_compactions", "false"},
                                  }));
-  dbfull()->TEST_WaitForCompact();
+  Status s = dbfull()->TEST_WaitForCompact();
+  ASSERT_TRUE(s.IsIOError());
+  ASSERT_STREQ(s.getState(), io_error_msg);
 
   // Following writes should fail as flush failed.
   ASSERT_NOK(Put(1, "foo2", "bar3"));
@@ -389,13 +401,14 @@ TEST_F(DBIOFailureTest, FlushSstCloseError) {
 
   DestroyAndReopen(options);
   CreateAndReopenWithCF({"pikachu"}, options);
-  Status s;
+
+  const char* io_error_msg = "close dummy error";
   std::atomic<int> close_called(0);
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
       "SpecialEnv::SStableFile::Close", [&](void* arg) {
         if (close_called.fetch_add(1) == 0) {
           Status* st = static_cast<Status*>(arg);
-          *st = Status::IOError("close dummy error");
+          *st = Status::IOError(io_error_msg);
         }
       });
 
@@ -404,7 +417,9 @@ TEST_F(DBIOFailureTest, FlushSstCloseError) {
   ASSERT_OK(Put(1, "foo", "bar"));
   ASSERT_OK(Put(1, "foo1", "bar1"));
   ASSERT_OK(Put(1, "foo", "bar2"));
-  dbfull()->TEST_WaitForFlushMemTable(handles_[1]);
+  Status s = dbfull()->TEST_WaitForFlushMemTable(handles_[1]);
+  ASSERT_TRUE(s.IsIOError());
+  ASSERT_STREQ(s.getState(), io_error_msg);
 
   // Following writes should fail as flush failed.
   ASSERT_NOK(Put(1, "foo2", "bar3"));
@@ -429,25 +444,25 @@ TEST_F(DBIOFailureTest, CompactionSstCloseError) {
 
   DestroyAndReopen(options);
   CreateAndReopenWithCF({"pikachu"}, options);
-  Status s;
 
   ASSERT_OK(Put(1, "foo", "bar"));
   ASSERT_OK(Put(1, "foo2", "bar"));
-  Flush(1);
+  ASSERT_OK(Flush(1));
   ASSERT_OK(Put(1, "foo", "bar2"));
   ASSERT_OK(Put(1, "foo2", "bar"));
-  Flush(1);
+  ASSERT_OK(Flush(1));
   ASSERT_OK(Put(1, "foo", "bar3"));
   ASSERT_OK(Put(1, "foo2", "bar"));
-  Flush(1);
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(Flush(1));
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
 
+  const char* io_error_msg = "close dummy error";
   std::atomic<int> close_called(0);
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
       "SpecialEnv::SStableFile::Close", [&](void* arg) {
         if (close_called.fetch_add(1) == 0) {
           Status* st = static_cast<Status*>(arg);
-          *st = Status::IOError("close dummy error");
+          *st = Status::IOError(io_error_msg);
         }
       });
 
@@ -456,7 +471,9 @@ TEST_F(DBIOFailureTest, CompactionSstCloseError) {
                                  {
                                      {"disable_auto_compactions", "false"},
                                  }));
-  dbfull()->TEST_WaitForCompact();
+  Status s = dbfull()->TEST_WaitForCompact();
+  ASSERT_TRUE(s.IsIOError());
+  ASSERT_STREQ(s.getState(), io_error_msg);
 
   // Following writes should fail as compaction failed.
   ASSERT_NOK(Put(1, "foo2", "bar3"));
@@ -480,13 +497,14 @@ TEST_F(DBIOFailureTest, FlushSstSyncError) {
 
   DestroyAndReopen(options);
   CreateAndReopenWithCF({"pikachu"}, options);
-  Status s;
+
+  const char* io_error_msg = "sync dummy error";
   std::atomic<int> sync_called(0);
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
       "SpecialEnv::SStableFile::Sync", [&](void* arg) {
         if (sync_called.fetch_add(1) == 0) {
           Status* st = static_cast<Status*>(arg);
-          *st = Status::IOError("sync dummy error");
+          *st = Status::IOError(io_error_msg);
         }
       });
 
@@ -495,7 +513,9 @@ TEST_F(DBIOFailureTest, FlushSstSyncError) {
   ASSERT_OK(Put(1, "foo", "bar"));
   ASSERT_OK(Put(1, "foo1", "bar1"));
   ASSERT_OK(Put(1, "foo", "bar2"));
-  dbfull()->TEST_WaitForFlushMemTable(handles_[1]);
+  Status s = dbfull()->TEST_WaitForFlushMemTable(handles_[1]);
+  ASSERT_TRUE(s.IsIOError());
+  ASSERT_STREQ(s.getState(), io_error_msg);
 
   // Following writes should fail as flush failed.
   ASSERT_NOK(Put(1, "foo2", "bar3"));
@@ -521,25 +541,25 @@ TEST_F(DBIOFailureTest, CompactionSstSyncError) {
 
   DestroyAndReopen(options);
   CreateAndReopenWithCF({"pikachu"}, options);
-  Status s;
 
   ASSERT_OK(Put(1, "foo", "bar"));
   ASSERT_OK(Put(1, "foo2", "bar"));
-  Flush(1);
+  ASSERT_OK(Flush(1));
   ASSERT_OK(Put(1, "foo", "bar2"));
   ASSERT_OK(Put(1, "foo2", "bar"));
-  Flush(1);
+  ASSERT_OK(Flush(1));
   ASSERT_OK(Put(1, "foo", "bar3"));
   ASSERT_OK(Put(1, "foo2", "bar"));
-  Flush(1);
-  dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(Flush(1));
+  ASSERT_OK(dbfull()->TEST_WaitForCompact());
 
+  const char* io_error_msg = "sync dummy error";
   std::atomic<int> sync_called(0);
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
       "SpecialEnv::SStableFile::Sync", [&](void* arg) {
         if (sync_called.fetch_add(1) == 0) {
           Status* st = static_cast<Status*>(arg);
-          *st = Status::IOError("close dummy error");
+          *st = Status::IOError(io_error_msg);
         }
       });
 
@@ -548,7 +568,9 @@ TEST_F(DBIOFailureTest, CompactionSstSyncError) {
                                  {
                                      {"disable_auto_compactions", "false"},
                                  }));
-  dbfull()->TEST_WaitForCompact();
+  Status s = dbfull()->TEST_WaitForCompact();
+  ASSERT_TRUE(s.IsIOError());
+  ASSERT_STREQ(s.getState(), io_error_msg);
 
   // Following writes should fail as compaction failed.
   ASSERT_NOK(Put(1, "foo2", "bar3"));

db/db_sst_test.cc

@@ -98,7 +98,7 @@ TEST_F(DBSSTTest, SSTsWithLdbSuffixHandling) {
   for (int i = 0; i < 10; ++i) {
     GenerateNewFile(&rnd, &key_id, false);
   }
-  Flush();
+  ASSERT_OK(Flush());
   Close();
   int const num_files = GetSstFileCount(dbname_);
   ASSERT_GT(num_files, 0);
@@ -393,7 +393,7 @@ TEST_F(DBSSTTest, RateLimitedDelete) {
 
   WriteOptions wo;
   wo.disableWAL = true;
-  ASSERT_OK(TryReopen(options));
+  Reopen(options);
   // Create 4 files in L0
   for (char v = 'a'; v <= 'd'; v++) {
     ASSERT_OK(Put("Key2", DummyString(1024, v), wo));
@@ -540,7 +540,7 @@ TEST_P(DBWALTestWithParam, WALTrashCleanupOnOpen) {
   auto sfm = static_cast<SstFileManagerImpl*>(options.sst_file_manager.get());
   sfm->delete_scheduler()->SetMaxTrashDBRatio(3.1);
 
-  ASSERT_OK(TryReopen(options));
+  Reopen(options);
 
   // Create 4 files in L0
   for (char v = 'a'; v <= 'd'; v++) {
@@ -567,11 +567,11 @@ TEST_P(DBWALTestWithParam, WALTrashCleanupOnOpen) {
   if (!wal_dir_same_as_dbname_) {
     // Forcibly create some trash log files
     std::unique_ptr<WritableFile> result;
-    env->NewWritableFile(options.wal_dir + "/1000.log.trash", &result,
-                         EnvOptions());
+    ASSERT_OK(env->NewWritableFile(options.wal_dir + "/1000.log.trash", &result,
+                                   EnvOptions()));
     result.reset();
   }
-  env->GetChildren(options.wal_dir, &filenames);
+  ASSERT_OK(env->GetChildren(options.wal_dir, &filenames));
   for (const std::string& fname : filenames) {
     if (fname.find(".log.trash") != std::string::npos) {
       trash_log_count++;
@@ -580,11 +580,11 @@ TEST_P(DBWALTestWithParam, WALTrashCleanupOnOpen) {
   ASSERT_GE(trash_log_count, 1);
 
   env->set_fake_log_delete(false);
-  ASSERT_OK(TryReopen(options));
+  Reopen(options);
 
   filenames.clear();
   trash_log_count = 0;
-  env->GetChildren(options.wal_dir, &filenames);
+  ASSERT_OK(env->GetChildren(options.wal_dir, &filenames));
   for (const std::string& fname : filenames) {
     if (fname.find(".log.trash") != std::string::npos) {
       trash_log_count++;
@@ -614,7 +614,7 @@ TEST_F(DBSSTTest, OpenDBWithExistingTrash) {
   ASSERT_OK(WriteStringToFile(env_, "abc", dbname_ + "/" + "003.sst.trash"));
 
   // Reopen the DB and verify that it deletes existing trash files
-  ASSERT_OK(TryReopen(options));
+  Reopen(options);
   sfm->WaitForEmptyTrash();
   ASSERT_NOK(env_->FileExists(dbname_ + "/" + "001.sst.trash"));
   ASSERT_NOK(env_->FileExists(dbname_ + "/" + "002.sst.trash"));
@@ -872,10 +872,12 @@ TEST_F(DBSSTTest, CancellingManualCompactionsWorks) {
   ASSERT_OK(Flush());
 
   // OK, now trigger a manual compaction
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
+  ASSERT_TRUE(dbfull()
+                  ->CompactRange(CompactRangeOptions(), nullptr, nullptr)
+                  .IsCompactionTooLarge());
 
   // Wait for manual compaction to get scheduled and finish
-  dbfull()->TEST_WaitForCompact(true);
+  ASSERT_OK(dbfull()->TEST_WaitForCompact(true));
 
   ASSERT_EQ(sfm->GetCompactionsReservedSize(), 0);
   // Make sure the stat is bumped
@@ -885,10 +887,13 @@ TEST_F(DBSSTTest, CancellingManualCompactionsWorks) {
 
   // Now make sure CompactFiles also gets cancelled
   auto l0_files = collector->GetFlushedFiles();
-  dbfull()->CompactFiles(ROCKSDB_NAMESPACE::CompactionOptions(), l0_files, 0);
+  ASSERT_TRUE(
+      dbfull()
+          ->CompactFiles(ROCKSDB_NAMESPACE::CompactionOptions(), l0_files, 0)
+          .IsCompactionTooLarge());
 
   // Wait for manual compaction to get scheduled and finish
-  dbfull()->TEST_WaitForCompact(true);
+  ASSERT_OK(dbfull()->TEST_WaitForCompact(true));
 
   ASSERT_EQ(dbfull()->immutable_db_options().statistics.get()->getTickerCount(
                 COMPACTION_CANCELLED),
@@ -903,8 +908,9 @@ TEST_F(DBSSTTest, CancellingManualCompactionsWorks) {
       "CompactFilesImpl:End", [&](void* /*arg*/) { completed_compactions++; });
 
   ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
-  dbfull()->CompactFiles(ROCKSDB_NAMESPACE::CompactionOptions(), l0_files, 0);
-  dbfull()->TEST_WaitForCompact(true);
+  ASSERT_OK(dbfull()->CompactFiles(ROCKSDB_NAMESPACE::CompactionOptions(),
+                                   l0_files, 0));
+  ASSERT_OK(dbfull()->TEST_WaitForCompact(true));
 
   ASSERT_EQ(sfm->GetCompactionsReservedSize(), 0);
   ASSERT_GT(completed_compactions, 0);
@@ -1008,7 +1014,7 @@ TEST_F(DBSSTTest, OpenDBWithInfiniteMaxOpenFiles) {
     CompactRangeOptions compact_options;
     compact_options.change_level = true;
     compact_options.target_level = 2;
-    db_->CompactRange(compact_options, nullptr, nullptr);
+    ASSERT_OK(db_->CompactRange(compact_options, nullptr, nullptr));
 
     // Create 12 Files in L0
     for (int i = 0; i < 12; i++) {
@@ -1060,7 +1066,7 @@ TEST_F(DBSSTTest, GetTotalSstFilesSize) {
       std::string val = "val_file_" + ToString(i);
       ASSERT_OK(Put(Key(j), val));
     }
-    Flush();
+    ASSERT_OK(Flush());
   }
   ASSERT_EQ("5", FilesPerLevel(0));
 
@@ -1084,6 +1090,7 @@ TEST_F(DBSSTTest, GetTotalSstFilesSize) {
 
   // hold current version
   std::unique_ptr<Iterator> iter1(dbfull()->NewIterator(ReadOptions()));
+  ASSERT_OK(iter1->status());
 
   // Compact 5 files into 1 file in L0
   ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
@@ -1107,12 +1114,13 @@ TEST_F(DBSSTTest, GetTotalSstFilesSize) {
 
   // hold current version
   std::unique_ptr<Iterator> iter2(dbfull()->NewIterator(ReadOptions()));
+  ASSERT_OK(iter2->status());
 
   // Delete all keys and compact, this will delete all live files
   for (int i = 0; i < 10; i++) {
     ASSERT_OK(Delete(Key(i)));
   }
-  Flush();
+  ASSERT_OK(Flush());
   ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
   ASSERT_EQ("", FilesPerLevel(0));
 
@@ -1126,6 +1134,7 @@ TEST_F(DBSSTTest, GetTotalSstFilesSize) {
   // Total SST files = 6 (5 original files + compacted file)
   ASSERT_EQ(total_sst_files_size, 6 * single_file_size);
 
+  ASSERT_OK(iter1->status());
   iter1.reset();
   ASSERT_TRUE(dbfull()->GetIntProperty("rocksdb.total-sst-files-size",
                                        &total_sst_files_size));
@@ -1133,6 +1142,7 @@ TEST_F(DBSSTTest, GetTotalSstFilesSize) {
   // Total SST files = 1 (compacted file)
   ASSERT_EQ(total_sst_files_size, 1 * single_file_size);
 
+  ASSERT_OK(iter2->status());
   iter2.reset();
   ASSERT_TRUE(dbfull()->GetIntProperty("rocksdb.total-sst-files-size",
                                        &total_sst_files_size));
@@ -1151,7 +1161,7 @@ TEST_F(DBSSTTest, GetTotalSstFilesSizeVersionsFilesShared) {
   // Generate 5 files in L0
   for (int i = 0; i < 5; i++) {
     ASSERT_OK(Put(Key(i), "val"));
-    Flush();
+    ASSERT_OK(Flush());
   }
   ASSERT_EQ("5", FilesPerLevel(0));
 
@@ -1176,6 +1186,7 @@ TEST_F(DBSSTTest, GetTotalSstFilesSizeVersionsFilesShared) {
 
   // hold current version
   std::unique_ptr<Iterator> iter1(dbfull()->NewIterator(ReadOptions()));
+  ASSERT_OK(iter1->status());
 
   // Compaction will do trivial move from L0 to L1
   ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
@@ -1199,12 +1210,13 @@ TEST_F(DBSSTTest, GetTotalSstFilesSizeVersionsFilesShared) {
 
   // hold current version
   std::unique_ptr<Iterator> iter2(dbfull()->NewIterator(ReadOptions()));
+  ASSERT_OK(iter2->status());
 
   // Delete all keys and compact, this will delete all live files
   for (int i = 0; i < 5; i++) {
     ASSERT_OK(Delete(Key(i)));
   }
-  Flush();
+  ASSERT_OK(Flush());
   ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
   ASSERT_EQ("", FilesPerLevel(0));
 
@@ -1218,7 +1230,9 @@ TEST_F(DBSSTTest, GetTotalSstFilesSizeVersionsFilesShared) {
   // Total SST files = 5 (used in 2 version)
   ASSERT_EQ(total_sst_files_size, 5 * single_file_size);
 
+  ASSERT_OK(iter1->status());
   iter1.reset();
+  ASSERT_OK(iter2->status());
   iter2.reset();
 
   ASSERT_TRUE(dbfull()->GetIntProperty("rocksdb.total-sst-files-size",

db/db_tailing_iter_test.cc

@@ -31,6 +31,7 @@ TEST_F(DBTestTailingIterator, TailingIteratorSingle) {
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
   iter->SeekToFirst();
   ASSERT_TRUE(!iter->Valid());
+  ASSERT_OK(iter->status());
 
   // add a record and check that iter can see it
   ASSERT_OK(db_->Put(WriteOptions(), "mirko", "fodor"));
@@ -48,6 +49,7 @@ TEST_F(DBTestTailingIterator, TailingIteratorKeepAdding) {
   read_options.tailing = true;
 
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(iter->status());
   std::string value(1024, 'a');
 
   const int num_records = 10000;
@@ -70,7 +72,9 @@ TEST_F(DBTestTailingIterator, TailingIteratorSeekToNext) {
   read_options.tailing = true;
 
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(iter->status());
   std::unique_ptr<Iterator> itern(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(itern->status());
   std::string value(1024, 'a');
 
   const int num_records = 1000;
@@ -138,8 +142,11 @@ TEST_F(DBTestTailingIterator, TailingIteratorTrimSeekToNext) {
   Slice keyu(bufe, 20);
   read_options.iterate_upper_bound = &keyu;
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(iter->status());
   std::unique_ptr<Iterator> itern(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(itern->status());
   std::unique_ptr<Iterator> iterh(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(iterh->status());
   std::string value(1024, 'a');
   bool file_iters_deleted = false;
   bool file_iters_renewed_null = false;
@@ -225,6 +232,7 @@ TEST_F(DBTestTailingIterator, TailingIteratorTrimSeekToNext) {
   ReopenWithColumnFamilies({"default", "pikachu"}, options);
   read_options.read_tier = kBlockCacheTier;
   std::unique_ptr<Iterator> iteri(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(iteri->status());
   char buf5[32];
   snprintf(buf5, sizeof(buf5), "00a0%016d", (num_records / 2) * 5 - 2);
   Slice target1(buf5, 20);
@@ -236,6 +244,7 @@ TEST_F(DBTestTailingIterator, TailingIteratorTrimSeekToNext) {
   options.table_factory.reset(NewBlockBasedTableFactory());
   ReopenWithColumnFamilies({"default", "pikachu"}, options);
   iter.reset(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(iter->status());
   for (int i = 2 * num_records; i > 0; --i) {
     char buf1[32];
     char buf2[32];
@@ -262,6 +271,7 @@ TEST_F(DBTestTailingIterator, TailingIteratorDeletes) {
   read_options.tailing = true;
 
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(iter->status());
 
   // write a single record, read it using the iterator, then delete it
   ASSERT_OK(Put(1, "0test", "test"));
@@ -309,6 +319,7 @@ TEST_F(DBTestTailingIterator, TailingIteratorPrefixSeek) {
   CreateAndReopenWithCF({"pikachu"}, options);
 
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(iter->status());
   ASSERT_OK(Put(1, "0101", "test"));
 
   ASSERT_OK(Flush(1));
@@ -339,6 +350,7 @@ TEST_F(DBTestTailingIterator, TailingIteratorIncomplete) {
   ASSERT_OK(db_->Put(WriteOptions(), key, value));
 
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
+  ASSERT_OK(iter->status());
   iter->SeekToFirst();
   // we either see the entry or it's not in cache
   ASSERT_TRUE(iter->Valid() || iter->status().IsIncomplete());
@@ -369,6 +381,7 @@ TEST_F(DBTestTailingIterator, TailingIteratorSeekToSame) {
   }
 
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
+  ASSERT_OK(iter->status());
   // Seek to 00001.  We expect to find 00002.
   std::string start_key = "00001";
   iter->Seek(start_key);
@@ -404,6 +417,7 @@ TEST_F(DBTestTailingIterator, TailingIteratorUpperBound) {
   ASSERT_OK(Put(1, "21", "21"));
 
   std::unique_ptr<Iterator> it(db_->NewIterator(read_options, handles_[1]));
+  ASSERT_OK(it->status());
   it->Seek("12");
   ASSERT_TRUE(it->Valid());
   ASSERT_EQ("12", it->key().ToString());
@@ -479,6 +493,8 @@ TEST_F(DBTestTailingIterator, TailingIteratorGap) {
   it->Next();
   ASSERT_TRUE(it->Valid());
   ASSERT_EQ("40", it->key().ToString());
+
+  ASSERT_OK(it->status());
 }
 
 TEST_F(DBTestTailingIterator, SeekWithUpperBoundBug) {
@@ -497,6 +513,7 @@ TEST_F(DBTestTailingIterator, SeekWithUpperBoundBug) {
   ASSERT_OK(Flush());
 
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
+  ASSERT_OK(iter->status());
 
   iter->Seek("aa");
   ASSERT_TRUE(iter->Valid());
@@ -519,6 +536,7 @@ TEST_F(DBTestTailingIterator, SeekToFirstWithUpperBoundBug) {
   ASSERT_OK(Flush());
 
   std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
+  ASSERT_OK(iter->status());
 
   iter->SeekToFirst();
   ASSERT_TRUE(iter->Valid());

db/db_test.cc

@@ -1337,17 +1337,19 @@ TEST_F(DBTest, ApproximateSizesMemTable) {
   SizeApproximationOptions size_approx_options;
   size_approx_options.include_memtabtles = true;
   size_approx_options.include_files = true;
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size));
   ASSERT_GT(size, 6000);
   ASSERT_LT(size, 204800);
   // Zero if not including mem table
-  db_->GetApproximateSizes(&r, 1, &size);
+  ASSERT_OK(db_->GetApproximateSizes(&r, 1, &size));
   ASSERT_EQ(size, 0);
 
   start = Key(500);
   end = Key(600);
   r = Range(start, end);
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size));
   ASSERT_EQ(size, 0);
 
   for (int i = 0; i < N; i++) {
@@ -1357,13 +1359,15 @@ TEST_F(DBTest, ApproximateSizesMemTable) {
   start = Key(500);
   end = Key(600);
   r = Range(start, end);
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size));
   ASSERT_EQ(size, 0);
 
   start = Key(100);
   end = Key(1020);
   r = Range(start, end);
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size));
   ASSERT_GT(size, 6000);
 
   options.max_write_buffer_number = 8;
@@ -1389,29 +1393,32 @@ TEST_F(DBTest, ApproximateSizesMemTable) {
   start = Key(100);
   end = Key(300);
   r = Range(start, end);
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size));
   ASSERT_EQ(size, 0);
 
   start = Key(1050);
   end = Key(1080);
   r = Range(start, end);
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size));
   ASSERT_GT(size, 6000);
 
   start = Key(2100);
   end = Key(2300);
   r = Range(start, end);
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size));
   ASSERT_EQ(size, 0);
 
   start = Key(1050);
   end = Key(1080);
   r = Range(start, end);
   uint64_t size_with_mt, size_without_mt;
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1,
-                           &size_with_mt);
+  ASSERT_OK(db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1,
+                                     &size_with_mt));
   ASSERT_GT(size_with_mt, 6000);
-  db_->GetApproximateSizes(&r, 1, &size_without_mt);
+  ASSERT_OK(db_->GetApproximateSizes(&r, 1, &size_without_mt));
   ASSERT_EQ(size_without_mt, 0);
 
   Flush();
@@ -1423,15 +1430,16 @@ TEST_F(DBTest, ApproximateSizesMemTable) {
   start = Key(1050);
   end = Key(1080);
   r = Range(start, end);
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1,
-                           &size_with_mt);
-  db_->GetApproximateSizes(&r, 1, &size_without_mt);
+  ASSERT_OK(db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1,
+                                     &size_with_mt));
+  ASSERT_OK(db_->GetApproximateSizes(&r, 1, &size_without_mt));
   ASSERT_GT(size_with_mt, size_without_mt);
   ASSERT_GT(size_without_mt, 6000);
 
   // Check that include_memtabtles flag works as expected
   size_approx_options.include_memtabtles = false;
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size));
   ASSERT_EQ(size, size_without_mt);
 
   // Check that files_size_error_margin works as expected, when the heuristic
@@ -1440,10 +1448,12 @@ TEST_F(DBTest, ApproximateSizesMemTable) {
   end = Key(1000 + N - 2);
   r = Range(start, end);
   size_approx_options.files_size_error_margin = -1.0;  // disabled
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size));
   uint64_t size2;
   size_approx_options.files_size_error_margin = 0.5;  // enabled, but not used
-  db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size2);
+  ASSERT_OK(
+      db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size2));
   ASSERT_EQ(size, size2);
 }
 
@@ -1494,14 +1504,16 @@ TEST_F(DBTest, ApproximateSizesFilesWithErrorMargin) {
 
     // Get the precise size without any approximation heuristic
     uint64_t size;
-    db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size);
+    ASSERT_OK(db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1,
+                                       &size));
     ASSERT_NE(size, 0);
 
     // Get the size with an approximation heuristic
     uint64_t size2;
     const double error_margin = 0.2;
     size_approx_options.files_size_error_margin = error_margin;
-    db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1, &size2);
+    ASSERT_OK(db_->GetApproximateSizes(size_approx_options, default_cf, &r, 1,
+                                       &size2));
     ASSERT_LT(size2, size * (1 + error_margin));
     ASSERT_GT(size2, size * (1 - error_margin));
   }
@@ -1517,7 +1529,7 @@ TEST_F(DBTest, ApproximateSizesFilesWithErrorMargin) {
       const std::string end = Key(i + 11);  // overlap by 1 key
       const Range r(start, end);
       uint64_t size;
-      db_->GetApproximateSizes(&r, 1, &size);
+      ASSERT_OK(db_->GetApproximateSizes(&r, 1, &size));
       ASSERT_LE(size, 11 * 100);
     }
   }
@@ -1585,9 +1597,12 @@ TEST_F(DBTest, ApproximateSizes) {
     DestroyAndReopen(options);
     CreateAndReopenWithCF({"pikachu"}, options);
 
-    ASSERT_TRUE(Between(Size("", "xyz", 1), 0, 0));
+    uint64_t size;
+    ASSERT_OK(Size("", "xyz", 1, &size));
+    ASSERT_TRUE(Between(size, 0, 0));
     ReopenWithColumnFamilies({"default", "pikachu"}, options);
-    ASSERT_TRUE(Between(Size("", "xyz", 1), 0, 0));
+    ASSERT_OK(Size("", "xyz", 1, &size));
+    ASSERT_TRUE(Between(size, 0, 0));
 
     // Write 8MB (80 values, each 100K)
     ASSERT_EQ(NumTableFilesAtLevel(0, 1), 0);
@@ -1600,7 +1615,8 @@ TEST_F(DBTest, ApproximateSizes) {
     }
 
     // 0 because GetApproximateSizes() does not account for memtable space
-    ASSERT_TRUE(Between(Size("", Key(50), 1), 0, 0));
+    ASSERT_OK(Size("", Key(50), 1, &size));
+    ASSERT_TRUE(Between(size, 0, 0));
 
     // Check sizes across recovery by reopening a few times
     for (int run = 0; run < 3; run++) {
@@ -1608,14 +1624,17 @@ TEST_F(DBTest, ApproximateSizes) {
 
       for (int compact_start = 0; compact_start < N; compact_start += 10) {
         for (int i = 0; i < N; i += 10) {
-          ASSERT_TRUE(Between(Size("", Key(i), 1), S1 * i, S2 * i));
-          ASSERT_TRUE(Between(Size("", Key(i) + ".suffix", 1), S1 * (i + 1),
-                              S2 * (i + 1)));
-          ASSERT_TRUE(Between(Size(Key(i), Key(i + 10), 1), S1 * 10, S2 * 10));
-        }
-        ASSERT_TRUE(Between(Size("", Key(50), 1), S1 * 50, S2 * 50));
-        ASSERT_TRUE(
-            Between(Size("", Key(50) + ".suffix", 1), S1 * 50, S2 * 50));
+          ASSERT_OK(Size("", Key(i), 1, &size));
+          ASSERT_TRUE(Between(size, S1 * i, S2 * i));
+          ASSERT_OK(Size("", Key(i) + ".suffix", 1, &size));
+          ASSERT_TRUE(Between(size, S1 * (i + 1), S2 * (i + 1)));
+          ASSERT_OK(Size(Key(i), Key(i + 10), 1, &size));
+          ASSERT_TRUE(Between(size, S1 * 10, S2 * 10));
+        }
+        ASSERT_OK(Size("", Key(50), 1, &size));
+        ASSERT_TRUE(Between(size, S1 * 50, S2 * 50));
+        ASSERT_OK(Size("", Key(50) + ".suffix", 1, &size));
+        ASSERT_TRUE(Between(size, S1 * 50, S2 * 50));
 
         std::string cstart_str = Key(compact_start);
         std::string cend_str = Key(compact_start + 9);
@@ -1650,21 +1669,32 @@ TEST_F(DBTest, ApproximateSizes_MixOfSmallAndLarge) {
     ASSERT_OK(Put(1, Key(7), rnd.RandomString(10000)));
 
     // Check sizes across recovery by reopening a few times
+    uint64_t size;
     for (int run = 0; run < 3; run++) {
       ReopenWithColumnFamilies({"default", "pikachu"}, options);
 
-      ASSERT_TRUE(Between(Size("", Key(0), 1), 0, 0));
-      ASSERT_TRUE(Between(Size("", Key(1), 1), 10000, 11000));
-      ASSERT_TRUE(Between(Size("", Key(2), 1), 20000, 21000));
-      ASSERT_TRUE(Between(Size("", Key(3), 1), 120000, 121000));
-      ASSERT_TRUE(Between(Size("", Key(4), 1), 130000, 131000));
-      ASSERT_TRUE(Between(Size("", Key(5), 1), 230000, 232000));
-      ASSERT_TRUE(Between(Size("", Key(6), 1), 240000, 242000));
+      ASSERT_OK(Size("", Key(0), 1, &size));
+      ASSERT_TRUE(Between(size, 0, 0));
+      ASSERT_OK(Size("", Key(1), 1, &size));
+      ASSERT_TRUE(Between(size, 10000, 11000));
+      ASSERT_OK(Size("", Key(2), 1, &size));
+      ASSERT_TRUE(Between(size, 20000, 21000));
+      ASSERT_OK(Size("", Key(3), 1, &size));
+      ASSERT_TRUE(Between(size, 120000, 121000));
+      ASSERT_OK(Size("", Key(4), 1, &size));
+      ASSERT_TRUE(Between(size, 130000, 131000));
+      ASSERT_OK(Size("", Key(5), 1, &size));
+      ASSERT_TRUE(Between(size, 230000, 232000));
+      ASSERT_OK(Size("", Key(6), 1, &size));
+      ASSERT_TRUE(Between(size, 240000, 242000));
       // Ensure some overhead is accounted for, even without including all
-      ASSERT_TRUE(Between(Size("", Key(7), 1), 540500, 545000));
-      ASSERT_TRUE(Between(Size("", Key(8), 1), 550500, 555000));
+      ASSERT_OK(Size("", Key(7), 1, &size));
+      ASSERT_TRUE(Between(size, 540500, 545000));
+      ASSERT_OK(Size("", Key(8), 1, &size));
+      ASSERT_TRUE(Between(size, 550500, 555000));
 
-      ASSERT_TRUE(Between(Size(Key(3), Key(5), 1), 110100, 111000));
+      ASSERT_OK(Size(Key(3), Key(5), 1, &size));
+      ASSERT_TRUE(Between(size, 110100, 111000));
 
       dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]);
     }
@@ -1748,6 +1778,7 @@ TEST_F(DBTest, Snapshot) {
 TEST_F(DBTest, HiddenValuesAreRemoved) {
   anon::OptionsOverride options_override;
   options_override.skip_policy = kSkipNoSnapshot;
+  uint64_t size;
   do {
     Options options = CurrentOptions(options_override);
     CreateAndReopenWithCF({"pikachu"}, options);
@@ -1765,7 +1796,8 @@ TEST_F(DBTest, HiddenValuesAreRemoved) {
     ASSERT_GT(NumTableFilesAtLevel(0, 1), 0);
 
     ASSERT_EQ(big, Get(1, "foo", snapshot));
-    ASSERT_TRUE(Between(Size("", "pastfoo", 1), 50000, 60000));
+    ASSERT_OK(Size("", "pastfoo", 1, &size));
+    ASSERT_TRUE(Between(size, 50000, 60000));
     db_->ReleaseSnapshot(snapshot);
     ASSERT_EQ(AllEntriesFor("foo", 1), "[ tiny, " + big + " ]");
     Slice x("x");
@@ -1776,7 +1808,8 @@ TEST_F(DBTest, HiddenValuesAreRemoved) {
     dbfull()->TEST_CompactRange(1, nullptr, &x, handles_[1]);
     ASSERT_EQ(AllEntriesFor("foo", 1), "[ tiny ]");
 
-    ASSERT_TRUE(Between(Size("", "pastfoo", 1), 0, 1000));
+    ASSERT_OK(Size("", "pastfoo", 1, &size));
+    ASSERT_TRUE(Between(size, 0, 1000));
     // ApproximateOffsetOf() is not yet implemented in plain table format,
     // which is used by Size().
   } while (ChangeOptions(kSkipUniversalCompaction | kSkipFIFOCompaction |

db/db_test_util.cc

@@ -1128,27 +1128,48 @@ std::string DBTestBase::FilesPerLevel(int cf) {
 #endif  // !ROCKSDB_LITE
 
 size_t DBTestBase::CountFiles() {
+  size_t count = 0;
   std::vector<std::string> files;
-  EXPECT_OK(env_->GetChildren(dbname_, &files));
+  if (env_->GetChildren(dbname_, &files).ok()) {
+    count += files.size();
+  }
 
-  std::vector<std::string> logfiles;
   if (dbname_ != last_options_.wal_dir) {
-    Status s = env_->GetChildren(last_options_.wal_dir, &logfiles);
-    EXPECT_TRUE(s.ok() || s.IsNotFound());
+    if (env_->GetChildren(last_options_.wal_dir, &files).ok()) {
+      count += files.size();
+    }
+  }
+
+  return count;
+};
+
+Status DBTestBase::CountFiles(size_t* count) {
+  std::vector<std::string> files;
+  Status s = env_->GetChildren(dbname_, &files);
+  if (!s.ok()) {
+    return s;
+  }
+  size_t files_count = files.size();
+
+  if (dbname_ != last_options_.wal_dir) {
+    s = env_->GetChildren(last_options_.wal_dir, &files);
+    if (!s.ok()) {
+      return s;
+    }
+    *count = files_count + files.size();
   }
 
-  return files.size() + logfiles.size();
+  return Status::OK();
 }
 
-uint64_t DBTestBase::Size(const Slice& start, const Slice& limit, int cf) {
+Status DBTestBase::Size(const Slice& start, const Slice& limit, int cf,
+                        uint64_t* size) {
   Range r(start, limit);
-  uint64_t size;
   if (cf == 0) {
-    db_->GetApproximateSizes(&r, 1, &size);
+    return db_->GetApproximateSizes(&r, 1, size);
   } else {
-    db_->GetApproximateSizes(handles_[1], &r, 1, &size);
+    return db_->GetApproximateSizes(handles_[1], &r, 1, size);
   }
-  return size;
 }
 
 void DBTestBase::Compact(int cf, const Slice& start, const Slice& limit,

db/db_test_util.h

@@ -1070,7 +1070,13 @@ class DBTestBase : public testing::Test {
 
   size_t CountFiles();
 
-  uint64_t Size(const Slice& start, const Slice& limit, int cf = 0);
+  Status CountFiles(size_t* count);
+
+  Status Size(const Slice& start, const Slice& limit, uint64_t* size) {
+    return Size(start, limit, 0, size);
+  }
+
+  Status Size(const Slice& start, const Slice& limit, int cf, uint64_t* size);
 
   void Compact(int cf, const Slice& start, const Slice& limit,
                uint32_t target_path_id);

db/db_with_timestamp_basic_test.cc

@@ -270,7 +270,7 @@ TEST_F(DBBasicTestWithTimestamp, GetApproximateSizes) {
   ASSERT_EQ(range_sizes[1], size);
 
   // Zero if not including mem table
-  db_->GetApproximateSizes(&r, 1, &size);
+  ASSERT_OK(db_->GetApproximateSizes(&r, 1, &size));
   ASSERT_EQ(size, 0);
 
   start = Key(500);

db/event_helpers.cc

@@ -213,17 +213,16 @@ void EventHelpers::NotifyOnErrorRecoveryCompleted(
     const std::vector<std::shared_ptr<EventListener>>& listeners,
     Status old_bg_error, InstrumentedMutex* db_mutex) {
 #ifndef ROCKSDB_LITE
-  if (listeners.size() == 0U) {
-    return;
-  }
+  if (listeners.size() > 0) {
     db_mutex->AssertHeld();
     // release lock while notifying events
     db_mutex->Unlock();
     for (auto& listener : listeners) {
       listener->OnErrorRecoveryCompleted(old_bg_error);
     }
-  old_bg_error.PermitUncheckedError();
     db_mutex->Lock();
+  }
+  old_bg_error.PermitUncheckedError();
 #else
   (void)listeners;
   (void)old_bg_error;

file/delete_scheduler.cc

@@ -98,11 +98,13 @@ Status DeleteScheduler::DeleteFile(const std::string& file_path,
 
   // Update the total trash size
   uint64_t trash_file_size = 0;
-  Status ignored =
+  IOStatus io_s =
       fs_->GetFileSize(trash_file, IOOptions(), &trash_file_size, nullptr);
-  ignored.PermitUncheckedError();  //**TODO: What should we do if we failed to
-                                   // get the file size?
+  if (io_s.ok()) {
     total_trash_size_.fetch_add(trash_file_size);
+  }
+  //**TODO: What should we do if we failed to
+  // get the file size?
 
   // Add file to delete queue
   {
@@ -199,9 +201,7 @@ Status DeleteScheduler::MarkAsTrash(const std::string& file_path,
     cnt++;
   }
   if (s.ok()) {
-    //**TODO: What should we do if this returns an error?
-    sst_file_manager_->OnMoveFile(file_path, *trash_file)
-        .PermitUncheckedError();
+    s = sst_file_manager_->OnMoveFile(file_path, *trash_file);
   }
   return s;
 }

file/sst_file_manager_impl.cc

@@ -158,7 +158,7 @@ bool SstFileManagerImpl::IsMaxAllowedSpaceReachedIncludingCompactions() {
 
 bool SstFileManagerImpl::EnoughRoomForCompaction(
     ColumnFamilyData* cfd, const std::vector<CompactionInputFiles>& inputs,
-    Status bg_error) {
+    const Status& bg_error) {
   MutexLock l(&mu_);
   uint64_t size_added_by_compaction = 0;
   // First check if we even have the space to do the compaction
@@ -183,7 +183,7 @@ bool SstFileManagerImpl::EnoughRoomForCompaction(
   // seen a NoSpace() error. This is tin order to contain a single potentially
   // misbehaving DB instance and prevent it from slowing down compactions of
   // other DB instances
-  if (bg_error == Status::NoSpace() && CheckFreeSpace()) {
+  if (bg_error.IsNoSpace() && CheckFreeSpace()) {
     auto fn =
         TableFileName(cfd->ioptions()->cf_paths, inputs[0][0]->fd.GetNumber(),
                       inputs[0][0]->fd.GetPathId());

file/sst_file_manager_impl.h

@@ -22,7 +22,7 @@ namespace ROCKSDB_NAMESPACE {
 class Env;
 class Logger;
 
-// SstFileManager is used to track SST files in the DB and control there
+// SstFileManager is used to track SST files in the DB and control their
 // deletion rate.
 // All SstFileManager public functions are thread-safe.
 class SstFileManagerImpl : public SstFileManager {
@@ -77,7 +77,7 @@ class SstFileManagerImpl : public SstFileManager {
   // the full compaction size).
   bool EnoughRoomForCompaction(ColumnFamilyData* cfd,
                                const std::vector<CompactionInputFiles>& inputs,
-                               Status bg_error);
+                               const Status& bg_error);
 
   // Bookkeeping so total_file_sizes_ goes back to normal after compaction
   // finishes

include/rocksdb/c.h

@@ -496,13 +496,13 @@ extern ROCKSDB_LIBRARY_API char* rocksdb_property_value_cf(
 extern ROCKSDB_LIBRARY_API void rocksdb_approximate_sizes(
     rocksdb_t* db, int num_ranges, const char* const* range_start_key,
     const size_t* range_start_key_len, const char* const* range_limit_key,
-    const size_t* range_limit_key_len, uint64_t* sizes);
+    const size_t* range_limit_key_len, uint64_t* sizes, char** errptr);
 
 extern ROCKSDB_LIBRARY_API void rocksdb_approximate_sizes_cf(
     rocksdb_t* db, rocksdb_column_family_handle_t* column_family,
     int num_ranges, const char* const* range_start_key,
     const size_t* range_start_key_len, const char* const* range_limit_key,
-    const size_t* range_limit_key_len, uint64_t* sizes);
+    const size_t* range_limit_key_len, uint64_t* sizes, char** errptr);
 
 extern ROCKSDB_LIBRARY_API void rocksdb_compact_range(rocksdb_t* db,
                                                       const char* start_key,

include/rocksdb/db.h

@@ -1027,20 +1027,22 @@ class DB {
   // Simpler versions of the GetApproximateSizes() method above.
   // The include_flags argumenbt must of type DB::SizeApproximationFlags
   // and can not be NONE.
-  virtual void GetApproximateSizes(ColumnFamilyHandle* column_family,
-                                   const Range* ranges, int n, uint64_t* sizes,
+  virtual Status GetApproximateSizes(ColumnFamilyHandle* column_family,
+                                     const Range* ranges, int n,
+                                     uint64_t* sizes,
                                      uint8_t include_flags = INCLUDE_FILES) {
     SizeApproximationOptions options;
     options.include_memtabtles =
         (include_flags & SizeApproximationFlags::INCLUDE_MEMTABLES) != 0;
     options.include_files =
         (include_flags & SizeApproximationFlags::INCLUDE_FILES) != 0;
-    Status s = GetApproximateSizes(options, column_family, ranges, n, sizes);
-    s.PermitUncheckedError();
+    return GetApproximateSizes(options, column_family, ranges, n, sizes);
   }
-  virtual void GetApproximateSizes(const Range* ranges, int n, uint64_t* sizes,
+  virtual Status GetApproximateSizes(const Range* ranges, int n,
+                                     uint64_t* sizes,
                                      uint8_t include_flags = INCLUDE_FILES) {
-    GetApproximateSizes(DefaultColumnFamily(), ranges, n, sizes, include_flags);
+    return GetApproximateSizes(DefaultColumnFamily(), ranges, n, sizes,
+                               include_flags);
   }
 
   // The method is similar to GetApproximateSizes, except it

table/block_based/block_based_table_builder.cc

@@ -1452,7 +1452,8 @@ void BlockBasedTableBuilder::WriteIndexBlock(
     }
   }
   // If there are more index partitions, finish them and write them out
-  Status s = index_builder_status;
+  if (index_builder_status.IsIncomplete()) {
+    Status s = Status::Incomplete();
     while (ok() && s.IsIncomplete()) {
       s = rep_->index_builder->Finish(&index_blocks, *index_block_handle);
       if (!s.ok() && !s.IsIncomplete()) {
@@ -1460,13 +1461,15 @@ void BlockBasedTableBuilder::WriteIndexBlock(
         return;
       }
       if (rep_->table_options.enable_index_compression) {
-      WriteBlock(index_blocks.index_block_contents, index_block_handle, false);
+        WriteBlock(index_blocks.index_block_contents, index_block_handle,
+                   false);
       } else {
         WriteRawBlock(index_blocks.index_block_contents, kNoCompression,
                       index_block_handle);
       }
       // The last index_block_handle will be for the partition index block
     }
+  }
 }
 
 void BlockBasedTableBuilder::WritePropertiesBlock(

tools/ldb_cmd.cc

@@ -2493,14 +2493,12 @@ void ApproxSizeCommand::DoCommand() {
   Range ranges[1];
   ranges[0] = Range(start_key_, end_key_);
   uint64_t sizes[1];
-  db_->GetApproximateSizes(GetCfHandle(), ranges, 1, sizes);
+  Status s = db_->GetApproximateSizes(GetCfHandle(), ranges, 1, sizes);
+  if (!s.ok()) {
+    exec_state_ = LDBCommandExecuteResult::Failed(s.ToString());
+  } else {
     fprintf(stdout, "%lu\n", (unsigned long)sizes[0]);
-  /* Weird that GetApproximateSizes() returns void, although documentation
-   * says that it returns a Status object.
-  if (!st.ok()) {
-    exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
   }
-  */
 }
 
 // ----------------------------------------------------------------------------