Yingyi Bu has submitted this change and it was merged.

Change subject: ASTERIXDB-1330: fix NPE in ExternalGroupByOperator.
......................................................................


ASTERIXDB-1330: fix NPE in ExternalGroupByOperator.

Change-Id: I2279221abbef1440179a31df180a24f6a642c641
Reviewed-on: https://asterix-gerrit.ics.uci.edu/687
Tested-by: Jenkins <[email protected]>
Reviewed-by: Ian Maxon <[email protected]>
---
M 
hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupBuildOperatorNodePushable.java
M 
hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupWriteOperatorNodePushable.java
2 files changed, 3 insertions(+), 2 deletions(-)

Approvals:
  Ian Maxon: Looks good to me, approved
  Jenkins: Verified



diff --git 
a/hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupBuildOperatorNodePushable.java
 
b/hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupBuildOperatorNodePushable.java
index ba3853c..852a160 100644
--- 
a/hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupBuildOperatorNodePushable.java
+++ 
b/hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupBuildOperatorNodePushable.java
@@ -71,7 +71,8 @@
         for (int i = 0; i < comparatorFactories.length; ++i) {
             comparators[i] = comparatorFactories[i].createBinaryComparator();
         }
-        this.firstNormalizerComputer = 
firstNormalizerFactory.createNormalizedKeyComputer();
+        this.firstNormalizerComputer = firstNormalizerFactory == null ? null
+                : firstNormalizerFactory.createNormalizedKeyComputer();
         this.spillableTableFactory = spillableTableFactory;
         this.inRecordDescriptor = inRecordDescriptor;
         this.outRecordDescriptor = outRecordDescriptor;
diff --git 
a/hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupWriteOperatorNodePushable.java
 
b/hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupWriteOperatorNodePushable.java
index a2922ae..0dbb063 100644
--- 
a/hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupWriteOperatorNodePushable.java
+++ 
b/hyracks/hyracks-dataflow-std/src/main/java/org/apache/hyracks/dataflow/std/group/external/ExternalGroupWriteOperatorNodePushable.java
@@ -64,7 +64,7 @@
         this.stateId = stateId;
         this.spillableTableFactory = spillableTableFactory;
         this.frameLimit = framesLimit;
-        this.nmkComputer = nmkFactory.createNormalizedKeyComputer();
+        this.nmkComputer = nmkFactory == null ? null : 
nmkFactory.createNormalizedKeyComputer();
 
         this.partialAggRecordDesc = partialAggRecordDesc;
         this.outRecordDesc = outRecordDesc;

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Gerrit-MessageType: merged
Gerrit-Change-Id: I2279221abbef1440179a31df180a24f6a642c641
Gerrit-PatchSet: 2
Gerrit-Project: hyracks
Gerrit-Branch: master
Gerrit-Owner: Yingyi Bu <[email protected]>
Gerrit-Reviewer: Ian Maxon <[email protected]>
Gerrit-Reviewer: Jenkins <[email protected]>
Gerrit-Reviewer: Jianfeng Jia <[email protected]>
Gerrit-Reviewer: Till Westmann <[email protected]>
Gerrit-Reviewer: Yingyi Bu <[email protected]>

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