removed redundant buf writer, and checks

index/scorch/segment/zap/build.go

@@ -51,7 +51,7 @@ func PersistSegment(memSegment *mem.Segment, path string, chunkFactor uint32) (e
 
 	var storedIndexOffset uint64
 	var dictLocs []uint64
-	var docValueOffset uint64
+	docValueOffset := uint64(fieldNotUninverted)
 	if len(memSegment.Stored) > 0 {
 
 		storedIndexOffset, err = persistStored(memSegment, cr)

index/scorch/segment/zap/contentcoder.go

@@ -15,7 +15,6 @@
 package zap
 
 import (
-	"bufio"
 	"bytes"
 	"encoding/binary"
 	"io"
@@ -87,18 +86,13 @@ func (c *chunkedContentCoder) flushContents() error {
 		return err
 	}
 
-	w := bufio.NewWriter(&c.chunkMetaBuf)
 	// write out the metaData slice
 	for _, meta := range c.chunkMeta {
-		_, err := writeUvarints(w, meta.DocID, meta.DocDvLoc, meta.DocDvLen)
+		_, err := writeUvarints(&c.chunkMetaBuf, meta.DocID, meta.DocDvLoc, meta.DocDvLen)
 		if err != nil {
 			return err
 		}
 	}
-	err = w.Flush()
-	if err != nil {
-		return err
-	}
 
 	// write the metadata to final data
 	metaData := c.chunkMetaBuf.Bytes()

index/scorch/segment/zap/docvalues.go

@@ -46,7 +46,7 @@ func (di *docValueIterator) curChunkNumber() uint64 {
 func (s *Segment) loadFieldDocValueIterator(field string,
 	fieldDvLoc uint64) (*docValueIterator, error) {
 	// get the docValue offset for the given fields
-	if fieldDvLoc == math.MaxUint64 {
+	if fieldDvLoc == fieldNotUninverted {
 		return nil, fmt.Errorf("loadFieldDocValueConfigs: "+
 			"no docValues found for field: %s", field)
 	}

index/scorch/segment/zap/merge.go

@@ -53,7 +53,8 @@ func Merge(segments []*Segment, drops []*roaring.Bitmap, path string,
 	newSegDocCount := computeNewDocCount(segments, drops)
 
 	var newDocNums [][]uint64
-	var storedIndexOffset, fieldDvLocsOffset uint64
+	var storedIndexOffset uint64
+	fieldDvLocsOffset := uint64(fieldNotUninverted)
 	var dictLocs []uint64
 	if newSegDocCount > 0 {
 		storedIndexOffset, newDocNums, err = mergeStoredAndRemap(segments, drops,

index/scorch/segment/zap/segment.go

@@ -401,7 +401,7 @@ func (s *Segment) DictAddr(field string) (uint64, error) {
 }
 
 func (s *Segment) loadDvIterators() error {
-	if s.docValueOffset == fieldNotUninverted || s.docValueOffset == 0 {
+	if s.docValueOffset == fieldNotUninverted {
 		return nil
 	}