liyunzhang_intel created PIG-4936:
-------------------------------------
Summary: Fix NPE exception in
TestCustomPartitioner#testCustomPartitionerParseJoins
Key: PIG-4936
URL: https://issues.apache.org/jira/browse/PIG-4936
Project: Pig
Issue Type: Bug
Reporter: liyunzhang_intel
Assignee: liyunzhang_intel
After PIG-4919(upgrade spark to 1.6.1 version),
TestCustomPartitioner#TestCustomPartitioner fails.
{code}
Testcase: testCustomPartitionerParseJoins took 1.66 sec
Caused an ERROR
Unable to open iterator for alias hash. Backend error : Job aborted due to
stage failure: Task 0 in stage 2.0 failed 1 times, most recent failure: Lost
task 0.0 in stage 2.0 (TID 3, localhost): java.lang.RuntimeException:
java.lang.reflect.InvocationTargetException
at
org.apache.pig.backend.hadoop.executionengine.spark.MapReducePartitionerWrapper.getPartition(MapReducePartitionerWrapper.java:118)
at
org.apache.spark.shuffle.sort.BypassMergeSortShuffleWriter.write(BypassMergeSortShuffleWriter.java:151)
at
org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:73)
at
org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
at org.apache.spark.scheduler.Task.run(Task.scala:89)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:214)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.pig.backend.hadoop.executionengine.spark.MapReducePartitionerWrapper.getPartition(MapReducePartitionerWrapper.java:110)
... 8 more
Caused by: java.lang.NullPointerException
at
org.apache.pig.impl.io.PigNullableWritable.hashCode(PigNullableWritable.java:185)
at
org.apache.pig.test.utils.SimpleCustomPartitioner.getPartition(SimpleCustomPartitioner.java:33)
... 13 more
{code}
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