Repository: tajo
Updated Branches:
  refs/heads/master 1ab39706e -> d3727c735


TAJO-1020: TajoContainerProxy::assignExecutionBlock causes NPE by race 
condition.

Closes #127


Project: http://git-wip-us.apache.org/repos/asf/tajo/repo
Commit: http://git-wip-us.apache.org/repos/asf/tajo/commit/d3727c73
Tree: http://git-wip-us.apache.org/repos/asf/tajo/tree/d3727c73
Diff: http://git-wip-us.apache.org/repos/asf/tajo/diff/d3727c73

Branch: refs/heads/master
Commit: d3727c73560f4d4c0fd3d2ead84b577e6f3a51b1
Parents: 1ab3970
Author: Hyunsik Choi <[email protected]>
Authored: Wed Aug 27 20:19:10 2014 +0900
Committer: Hyunsik Choi <[email protected]>
Committed: Wed Aug 27 20:19:10 2014 +0900

----------------------------------------------------------------------
 CHANGES                                            |  3 +++
 .../java/org/apache/tajo/util/KeyValueSet.java     | 17 +++++------------
 2 files changed, 8 insertions(+), 12 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/tajo/blob/d3727c73/CHANGES
----------------------------------------------------------------------
diff --git a/CHANGES b/CHANGES
index 77c53d5..269c307 100644
--- a/CHANGES
+++ b/CHANGES
@@ -127,6 +127,9 @@ Release 0.9.0 - unreleased
 
   BUG FIXES
 
+    TAJO-1020: TajoContainerProxy::assignExecutionBlock causes NPE by race.
+    (hyunsik)
+
     TAJO-986: Task scheduler gets incorrect task size. (Mai Hai Thanh via 
jihoon)
 
     TAJO-873: Query status is still RUNNING after session expired.

http://git-wip-us.apache.org/repos/asf/tajo/blob/d3727c73/tajo-common/src/main/java/org/apache/tajo/util/KeyValueSet.java
----------------------------------------------------------------------
diff --git a/tajo-common/src/main/java/org/apache/tajo/util/KeyValueSet.java 
b/tajo-common/src/main/java/org/apache/tajo/util/KeyValueSet.java
index 6edb547..c1e7092 100644
--- a/tajo-common/src/main/java/org/apache/tajo/util/KeyValueSet.java
+++ b/tajo-common/src/main/java/org/apache/tajo/util/KeyValueSet.java
@@ -37,9 +37,7 @@ public class KeyValueSet implements 
ProtoObject<KeyValueSetProto>, Cloneable, Gs
   public static final String TRUE_STR = "true";
   public static final String FALSE_STR = "false";
 
-       private KeyValueSetProto.Builder builder = 
KeyValueSetProto.newBuilder();
-       
-       @Expose private Map<String,String> keyVals;
+  @Expose private Map<String,String> keyVals;
        
        public KeyValueSet() {
     keyVals = TUtil.newHashMap();
@@ -221,27 +219,22 @@ public class KeyValueSet implements 
ProtoObject<KeyValueSetProto>, Cloneable, Gs
        @Override
   public Object clone() throws CloneNotSupportedException {    
     KeyValueSet keyValueSet = (KeyValueSet) super.clone();
-    keyValueSet.builder = KeyValueSetProto.newBuilder();
     keyValueSet.keyVals = keyVals != null ? new HashMap<String, 
String>(keyVals) : null;
     return keyValueSet;
        }
        
        @Override
        public KeyValueSetProto getProto() {
-    if (builder == null) {
-      builder = KeyValueSetProto.newBuilder();
-    } else {
-      builder.clear();
-    }
+    KeyValueSetProto.Builder builder = KeyValueSetProto.newBuilder();
 
-    KeyValueProto.Builder kvBuilder;
+    KeyValueProto.Builder kvBuilder = KeyValueProto.newBuilder();
     if(this.keyVals != null) {
       for(Entry<String,String> kv : keyVals.entrySet()) {
-        kvBuilder = KeyValueProto.newBuilder();
         kvBuilder.setKey(kv.getKey());
-
         kvBuilder.setValue(kv.getValue());
         builder.addKeyval(kvBuilder.build());
+
+        kvBuilder.clear();
       }
     }
     return builder.build();

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