HBASE-801 Avoid unnecessary lazy seek

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1494458 13f79535-47bb-0310-9956-ffa450edef68
2013-06-19 04:58:26 +00:00 · 2013-06-19 04:58:26 +00:00 · 84e4531938
parent 955f87593e
commit 84e4531938
1 changed files with 2 additions and 1 deletions
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/KeyValueHeap.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/KeyValueHeap.java
@ -294,7 +294,8 @@ public class KeyValueHeap extends NonLazyKeyValueScanner
      }

      boolean seekResult;
-      if (isLazy) {
+      if (isLazy && heap.size() > 0) {
+        // If there is only one scanner left, we don't do lazy seek.
        seekResult = scanner.requestSeek(seekKey, forward, useBloom);
      } else {
        seekResult = NonLazyKeyValueScanner.doRealSeek(