From 1d63c55f7c39f1d99f43471d1f380a1649375683 Mon Sep 17 00:00:00 2001
From: Steve Yen <steve.yen@gmail.com>
Date: Wed, 9 Mar 2016 10:09:15 -0800
Subject: [PATCH] parse mossLowerLevelMaxBatchSize only when lower-level-store
 exists

---
 index/store/moss/store.go | 27 ++++++++++++---------------
 1 file changed, 12 insertions(+), 15 deletions(-)

diff --git a/index/store/moss/store.go b/index/store/moss/store.go
index 0454018f..b4249e40 100644
--- a/index/store/moss/store.go
+++ b/index/store/moss/store.go
@@ -92,26 +92,11 @@ func New(mo store.MergeOperator, config map[string]interface{}) (
 		}
 	}
 
-	mossLowerLevelMaxBatchSize := uint64(0)
-	v, ok = config["mossLowerLevelMaxBatchSize"]
-	if ok {
-		mossLowerLevelMaxBatchSizeF, ok := v.(float64)
-		if !ok {
-			return nil, fmt.Errorf("moss store,"+
-				" could not parse config[mossLowerLevelMaxBatchSize]: %v", v)
-		}
-
-		mossLowerLevelMaxBatchSize = uint64(mossLowerLevelMaxBatchSizeF)
-	}
-
-	// --------------------------------------------------
-
 	var llStore store.KVStore
 	if options.LowerLevelInit == nil &&
 		options.LowerLevelUpdate == nil &&
 		mossLowerLevelStoreName != "" {
 		mossLowerLevelStoreConfig := map[string]interface{}{}
-
 		v, ok := config["mossLowerLevelStoreConfig"]
 		if ok {
 			mossLowerLevelStoreConfig, ok = v.(map[string]interface{})
@@ -121,6 +106,18 @@ func New(mo store.MergeOperator, config map[string]interface{}) (
 			}
 		}
 
+		mossLowerLevelMaxBatchSize := uint64(0)
+		v, ok = config["mossLowerLevelMaxBatchSize"]
+		if ok {
+			mossLowerLevelMaxBatchSizeF, ok := v.(float64)
+			if !ok {
+				return nil, fmt.Errorf("moss store,"+
+					" could not parse config[mossLowerLevelMaxBatchSize]: %v", v)
+			}
+
+			mossLowerLevelMaxBatchSize = uint64(mossLowerLevelMaxBatchSizeF)
+		}
+
 		lowerLevelInit, lowerLevelUpdate, lowerLevelStore, err :=
 			initLowerLevelStore(mo, config,
 				mossLowerLevelStoreName,