From da92226d31df9910d698704129a587521dbe8ecd Mon Sep 17 00:00:00 2001
From: Aman Gupta <aman@tmm1.net>
Date: Mon, 27 Feb 2017 21:57:14 -0800
Subject: [PATCH] delete 0-count dictionary keys

---
 leveldb/writer.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/leveldb/writer.go b/leveldb/writer.go
index 4f02fed..f85c270 100644
--- a/leveldb/writer.go
+++ b/leveldb/writer.go
@@ -10,6 +10,7 @@
 package leveldb
 
 import (
+	"bytes"
 	"fmt"
 
 	"github.com/blevesearch/bleve/index/store"
@@ -63,7 +64,12 @@ func (w *Writer) ExecuteBatch(b store.KVBatch) error {
 		if !fullMergeOk {
 			return fmt.Errorf("unable to merge")
 		}
-		batch.Set(k, mergedVal)
+
+		if bytes.Equal(mergedVal, []byte{0}) {
+			batch.Delete(k)
+		} else {
+			batch.Set(k, mergedVal)
+		}
 	}
 
 	err := w.store.db.Write(w.options, batch.batch)