Clean up the ComputeCompactionScore() API

Summary: Make CompactionOptionsFIFO a part of mutable_cf_options

Test Plan: UT

Reviewers: sdong

Reviewed By: sdong

Subscribers: andrewkr, lgalanis, dhruba

Differential Revision: https://reviews.facebook.net/D58653

db/compaction_picker.cc

@@ -626,11 +626,7 @@ Compaction* CompactionPicker::CompactRange(
   // takes running compactions into account (by skipping files that are already
   // being compacted). Since we just changed compaction score, we recalculate it
   // here
-  {  // this piece of code recomputes compaction score
-    CompactionOptionsFIFO dummy_compaction_options_fifo;
-    vstorage->ComputeCompactionScore(mutable_cf_options,
-                                     dummy_compaction_options_fifo);
-  }
+  vstorage->ComputeCompactionScore(mutable_cf_options);
 
   return compaction;
 }
@@ -1038,11 +1034,7 @@ Compaction* LevelCompactionPicker::PickCompaction(
   // takes running compactions into account (by skipping files that are already
   // being compacted). Since we just changed compaction score, we recalculate it
   // here
-  {  // this piece of code recomputes compaction score
-    CompactionOptionsFIFO dummy_compaction_options_fifo;
-    vstorage->ComputeCompactionScore(mutable_cf_options,
-                                     dummy_compaction_options_fifo);
-  }
+  vstorage->ComputeCompactionScore(mutable_cf_options);
 
   TEST_SYNC_POINT_CALLBACK("LevelCompactionPicker::PickCompaction:Return", c);
 

db/compaction_picker_test.cc

@@ -119,7 +119,7 @@ class CompactionPickerTest : public testing::Test {
     vstorage_->UpdateNumNonEmptyLevels();
     vstorage_->GenerateFileIndexer();
     vstorage_->GenerateLevelFilesBrief();
-    vstorage_->ComputeCompactionScore(mutable_cf_options_, fifo_options_);
+    vstorage_->ComputeCompactionScore(mutable_cf_options_);
     vstorage_->GenerateLevel0NonOverlapping();
     vstorage_->SetFinalized();
   }

db/db_impl.cc

@@ -2081,11 +2081,7 @@ Status DBImpl::CompactFilesImpl(
   // takes running compactions into account (by skipping files that are already
   // being compacted). Since we just changed compaction score, we recalculate it
   // here.
-  {
-    CompactionOptionsFIFO dummy_compaction_options_fifo;
-    version->storage_info()->ComputeCompactionScore(
-        *c->mutable_cf_options(), dummy_compaction_options_fifo);
-  }
+  version->storage_info()->ComputeCompactionScore(*c->mutable_cf_options());
 
   compaction_job.Prepare();
 

db/db_impl_experimental.cc

@@ -49,8 +49,7 @@ Status DBImpl::SuggestCompactRange(ColumnFamilyHandle* column_family,
     }
     // Since we have some more files to compact, we should also recompute
     // compaction score
-    vstorage->ComputeCompactionScore(*cfd->GetLatestMutableCFOptions(),
-                                     CompactionOptionsFIFO());
+    vstorage->ComputeCompactionScore(*cfd->GetLatestMutableCFOptions());
     SchedulePendingCompaction(cfd);
     MaybeScheduleFlushOrCompaction();
   }

db/version_set.cc

@@ -1245,8 +1245,7 @@ void VersionStorageInfo::EstimateCompactionBytesNeeded(
 }
 
 void VersionStorageInfo::ComputeCompactionScore(
-    const MutableCFOptions& mutable_cf_options,
-    const CompactionOptionsFIFO& compaction_options_fifo) {
+    const MutableCFOptions& mutable_cf_options) {
   for (int level = 0; level <= MaxInputLevel(); level++) {
     double score;
     if (level == 0) {
@@ -1282,7 +1281,7 @@ void VersionStorageInfo::ComputeCompactionScore(
 
       if (compaction_style_ == kCompactionStyleFIFO) {
         score = static_cast<double>(total_size) /
-                compaction_options_fifo.max_table_files_size;
+                mutable_cf_options.compaction_options_fifo.max_table_files_size;
       } else {
         score = static_cast<double>(num_sorted_runs) /
                 mutable_cf_options.level0_file_num_compaction_trigger;
@@ -2138,8 +2137,7 @@ void VersionSet::AppendVersion(ColumnFamilyData* column_family_data,
                                Version* v) {
   // compute new compaction score
   v->storage_info()->ComputeCompactionScore(
-      *column_family_data->GetLatestMutableCFOptions(),
-      column_family_data->ioptions()->compaction_options_fifo);
+      *column_family_data->GetLatestMutableCFOptions());
 
   // Mark v finalized
   v->storage_info_.SetFinalized();

db/version_set.h

@@ -121,9 +121,7 @@ class VersionStorageInfo {
   // We use compaction scores to figure out which compaction to do next
   // REQUIRES: db_mutex held!!
   // TODO find a better way to pass compaction_options_fifo.
-  void ComputeCompactionScore(
-      const MutableCFOptions& mutable_cf_options,
-      const CompactionOptionsFIFO& compaction_options_fifo);
+  void ComputeCompactionScore(const MutableCFOptions& mutable_cf_options);
 
   // Estimate est_comp_needed_bytes_
   void EstimateCompactionBytesNeeded(

util/mutable_cf_options.h

@@ -50,7 +50,8 @@ struct MutableCFOptions {
         paranoid_file_checks(options.paranoid_file_checks),
         report_bg_io_stats(options.report_bg_io_stats),
         compression(options.compression),
-        min_partial_merge_operands(options.min_partial_merge_operands) {
+        min_partial_merge_operands(options.min_partial_merge_operands),
+        compaction_options_fifo(ioptions.compaction_options_fifo) {
     RefreshDerivedOptions(ioptions);
   }
   MutableCFOptions()
@@ -141,6 +142,7 @@ struct MutableCFOptions {
   bool report_bg_io_stats;
   CompressionType compression;
   uint32_t min_partial_merge_operands;
+  CompactionOptionsFIFO compaction_options_fifo;
 
   // Derived options
   // Per-level target file size.