Revert "Adding new table properties"

Summary:
Reverting https://reviews.facebook.net/D34269 for now
after I landed it a flaky test started continuously failing, I am almost sure this patch is not related to the test but I will revert it until I figure out why it's failing

Test Plan: make check

Reviewers: kradhakrishnan

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D50385

include/rocksdb/table_properties.h

@@ -53,16 +53,6 @@ struct TableProperties {
   // The name of the filter policy used in this table.
   // If no filter policy is used, `filter_policy_name` will be an empty string.
   std::string filter_policy_name;
-  // The name of the comparator used in this table.
-  std::string comparator_name;
-  // The name of the merge operator used in this table.
-  // If no merge operator is used, `merge_operator_name` will be
-  // an empty string.
-  std::string merge_operator_name;
-  // The names of the property collectors factories used in this table
-  // separated by commas
-  // {collector_name[1]},{collector_name[2]},{collector_name[3]} ..
-  std::string property_collectors_names;
 
   // user collected properties
   UserCollectedProperties user_collected_properties;
@@ -90,9 +80,6 @@ struct TablePropertiesNames {
   static const std::string kFormatVersion;
   static const std::string kFixedKeyLen;
   static const std::string kFilterPolicy;
-  static const std::string kComparator;
-  static const std::string kMergeOperator;
-  static const std::string kPropertyCollectors;
 };
 
 extern const std::string kPropertiesBlock;

table/block_based_table_builder.cc

@@ -26,7 +26,6 @@
 #include "rocksdb/env.h"
 #include "rocksdb/filter_policy.h"
 #include "rocksdb/flush_block_policy.h"
-#include "rocksdb/merge_operator.h"
 #include "rocksdb/table.h"
 
 #include "table/block.h"
@@ -789,23 +788,6 @@ Status BlockBasedTableBuilder::Finish() {
           r->table_options.filter_policy->Name() : "";
       r->props.index_size =
           r->index_builder->EstimatedSize() + kBlockTrailerSize;
-      r->props.comparator_name = r->ioptions.comparator != nullptr
-                                     ? r->ioptions.comparator->Name()
-                                     : "N/A";
-      r->props.merge_operator_name = r->ioptions.merge_operator != nullptr
-                                         ? r->ioptions.merge_operator->Name()
-                                         : "N/A";
-
-      std::string property_collectors_names = "";
-      for (uint32_t i = 0;
-           i < r->ioptions.table_properties_collector_factories.size(); ++i) {
-        if (i != 0) {
-          property_collectors_names += ",";
-        }
-        property_collectors_names +=
-            r->ioptions.table_properties_collector_factories[i]->Name();
-      }
-      r->props.property_collectors_names = property_collectors_names;
 
       // Add basic properties
       property_block_builder.AddTableProperty(r->props);

table/meta_blocks.cc

@@ -71,20 +71,8 @@ void PropertyBlockBuilder::AddTableProperty(const TableProperties& props) {
   Add(TablePropertiesNames::kFixedKeyLen, props.fixed_key_len);
 
   if (!props.filter_policy_name.empty()) {
-    Add(TablePropertiesNames::kFilterPolicy, props.filter_policy_name);
-  }
-
-  if (!props.comparator_name.empty()) {
-    Add(TablePropertiesNames::kComparator, props.comparator_name);
-  }
-
-  if (!props.merge_operator_name.empty()) {
-    Add(TablePropertiesNames::kMergeOperator, props.merge_operator_name);
-  }
-
-  if (!props.property_collectors_names.empty()) {
-    Add(TablePropertiesNames::kPropertyCollectors,
-        props.property_collectors_names);
+    Add(TablePropertiesNames::kFilterPolicy,
+        props.filter_policy_name);
   }
 }
 
@@ -215,12 +203,6 @@ Status ReadProperties(const Slice& handle_value, RandomAccessFileReader* file,
       *(pos->second) = val;
     } else if (key == TablePropertiesNames::kFilterPolicy) {
       new_table_properties->filter_policy_name = raw_val.ToString();
-    } else if (key == TablePropertiesNames::kComparator) {
-      new_table_properties->comparator_name = raw_val.ToString();
-    } else if (key == TablePropertiesNames::kMergeOperator) {
-      new_table_properties->merge_operator_name = raw_val.ToString();
-    } else if (key == TablePropertiesNames::kPropertyCollectors) {
-      new_table_properties->property_collectors_names = raw_val.ToString();
     } else {
       // handle user-collected properties
       new_table_properties->user_collected_properties.insert(

table/table_properties.cc

@@ -75,20 +75,6 @@ std::string TableProperties::ToString(
       filter_policy_name.empty() ? std::string("N/A") : filter_policy_name,
       prop_delim, kv_delim);
 
-  AppendProperty(result, "comparator name",
-                 comparator_name.empty() ? std::string("N/A") : comparator_name,
-                 prop_delim, kv_delim);
-
-  AppendProperty(
-      result, "merge operator name",
-      merge_operator_name.empty() ? std::string("N/A") : merge_operator_name,
-      prop_delim, kv_delim);
-
-  AppendProperty(result, "property collectors names",
-                 property_collectors_names.empty() ? std::string("N/A")
-                                                   : property_collectors_names,
-                 prop_delim, kv_delim);
-
   return result;
 }
 
@@ -122,11 +108,6 @@ const std::string TablePropertiesNames::kFormatVersion =
     "rocksdb.format.version";
 const std::string TablePropertiesNames::kFixedKeyLen =
     "rocksdb.fixed.key.length";
-const std::string TablePropertiesNames::kComparator = "rocksdb.comparator";
-const std::string TablePropertiesNames::kMergeOperator =
-    "rocksdb.merge.operator";
-const std::string TablePropertiesNames::kPropertyCollectors =
-    "rocksdb.property.collectors";
 
 extern const std::string kPropertiesBlock = "rocksdb.properties";
 // Old property block name for backward compatibility

table/table_test.cc

@@ -48,8 +48,6 @@
 #include "util/testharness.h"
 #include "util/testutil.h"
 
-#include "utilities/merge_operators.h"
-
 namespace rocksdb {
 
 extern const uint64_t kLegacyBlockBasedTableMagicNumber;
@@ -59,40 +57,6 @@ extern const uint64_t kPlainTableMagicNumber;
 
 namespace {
 
-// DummyPropertiesCollector used to test BlockBasedTableProperties
-class DummyPropertiesCollector : public TablePropertiesCollector {
- public:
-  const char* Name() const { return ""; }
-
-  Status Finish(UserCollectedProperties* properties) { return Status::OK(); }
-
-  Status Add(const Slice& user_key, const Slice& value) { return Status::OK(); }
-
-  virtual UserCollectedProperties GetReadableProperties() const {
-    return UserCollectedProperties{};
-  }
-};
-
-class DummyPropertiesCollectorFactory1
-    : public TablePropertiesCollectorFactory {
- public:
-  virtual TablePropertiesCollector* CreateTablePropertiesCollector(
-      TablePropertiesCollectorFactory::Context context) {
-    return new DummyPropertiesCollector();
-  }
-  const char* Name() const { return "DummyPropertiesCollector1"; }
-};
-
-class DummyPropertiesCollectorFactory2
-    : public TablePropertiesCollectorFactory {
- public:
-  virtual TablePropertiesCollector* CreateTablePropertiesCollector(
-      TablePropertiesCollectorFactory::Context context) {
-    return new DummyPropertiesCollector();
-  }
-  const char* Name() const { return "DummyPropertiesCollector2"; }
-};
-
 // Return reverse of "key".
 // Used to test non-lexicographic comparators.
 std::string Reverse(const Slice& key) {
@@ -1054,57 +1018,6 @@ TEST_F(BlockBasedTableTest, BasicBlockBasedTableProperties) {
   ASSERT_EQ(content.size() + kBlockTrailerSize, props.data_size);
 }
 
-TEST_F(BlockBasedTableTest, BlockBasedTableProperties2) {
-  TableConstructor c(&reverse_key_comparator);
-  std::vector<std::string> keys;
-  stl_wrappers::KVMap kvmap;
-
-  {
-    Options options;
-    BlockBasedTableOptions table_options;
-    options.table_factory.reset(NewBlockBasedTableFactory(table_options));
-
-    const ImmutableCFOptions ioptions(options);
-    c.Finish(options, ioptions, table_options,
-             GetPlainInternalComparator(options.comparator), &keys, &kvmap);
-
-    auto& props = *c.GetTableReader()->GetTableProperties();
-
-    // Default comparator
-    ASSERT_EQ("leveldb.BytewiseComparator", props.comparator_name);
-    // No merge operator
-    ASSERT_EQ("N/A", props.merge_operator_name);
-    // No property collectors
-    ASSERT_EQ("", props.property_collectors_names);
-    // No filter policy is used
-    ASSERT_EQ("", props.filter_policy_name);
-  }
-
-  {
-    Options options;
-    BlockBasedTableOptions table_options;
-    options.table_factory.reset(NewBlockBasedTableFactory(table_options));
-    options.comparator = &reverse_key_comparator;
-    options.merge_operator = MergeOperators::CreateUInt64AddOperator();
-    options.table_properties_collector_factories.emplace_back(
-        new DummyPropertiesCollectorFactory1());
-    options.table_properties_collector_factories.emplace_back(
-        new DummyPropertiesCollectorFactory2());
-
-    const ImmutableCFOptions ioptions(options);
-    c.Finish(options, ioptions, table_options,
-             GetPlainInternalComparator(options.comparator), &keys, &kvmap);
-
-    auto& props = *c.GetTableReader()->GetTableProperties();
-
-    ASSERT_EQ("rocksdb.ReverseBytewiseComparator", props.comparator_name);
-    ASSERT_EQ("UInt64AddOperator", props.merge_operator_name);
-    ASSERT_EQ("DummyPropertiesCollector1,DummyPropertiesCollector2",
-              props.property_collectors_names);
-    ASSERT_EQ("", props.filter_policy_name);  // no filter policy is used
-  }
-}
-
 TEST_F(BlockBasedTableTest, FilterPolicyNameProperties) {
   TableConstructor c(BytewiseComparator(), true);
   c.Add("a1", "val1");