fix comments

db.go

@@ -899,12 +899,12 @@ func buildL0Table(ft flushTask, bopts table.Options) []byte {
 	defer iter.Close()
 	b := table.NewTableBuilder(bopts)
 	defer b.Close()
+	var vp valuePointer
 	for iter.SeekToFirst(); iter.Valid(); iter.Next() {
 		if len(ft.dropPrefix) > 0 && bytes.HasPrefix(iter.Key(), ft.dropPrefix) {
 			continue
 		}
 		vs := iter.Value()
-		var vp valuePointer
 		if vs.Meta&bitValuePointer > 0 {
 			vp.Decode(vs.Value)
 		}

levels.go

@@ -508,6 +508,7 @@ func (s *levelsController) compactBuildTables(
 	resultCh := make(chan newTableResult)
 	var numBuilds, numVersions int
 	var lastKey, skipKey []byte
+	var vp valuePointer
 	for it.Valid() {
 		timeStart := time.Now()
 		dk, err := s.kv.registry.latestDataKey()
@@ -584,7 +585,6 @@ func (s *levelsController) compactBuildTables(
 				}
 			}
 			numKeys++
-			var vp valuePointer
 			if vs.Meta&bitValuePointer > 0 {
 				vp.Decode(vs.Value)
 			}

table/builder.go

@@ -70,7 +70,7 @@ type Builder struct {
 	baseOffset   uint32   // Offset for the current block.
 	entryOffsets []uint32 // Offsets of entries present in current block.
 	tableIndex   *pb.TableIndex
-	keyHashes    []uint64 // Used for building bloomfilter.
+	keyHashes    []uint64 // Used for building the bloomfilter.
 	opt          *Options
 }
 

table/table.go

@@ -97,9 +97,10 @@ type Table struct {
 	smallest, biggest []byte // Smallest and largest keys (with timestamps).
 	id                uint64 // file id, part of filename
 
-	bf            *z.Bloom
-	Checksum      []byte
-	estimatedSize uint64 // Stores the total size of key-values stored in this table.
+	bf       *z.Bloom
+	Checksum []byte
+	// Stores the total size of key-values stored in this table (including the size on vlog).
+	estimatedSize uint64
 
 	IsInmemory bool // Set to true if the table is on level 0 and opened in memory.
 	opt        *Options
@@ -441,7 +442,8 @@ func (t *Table) blockCacheKey(idx int) uint64 {
 	return (t.ID() << 32) | uint64(idx)
 }
 
-// EstimatedSize returns the total size of key-values stored in this table.
+// EstimatedSize returns the total size of key-values stored in this table (including the
+// disk space occupied on the value log).
 func (t *Table) EstimatedSize() uint64 { return t.estimatedSize }
 
 // Size is its file size in bytes