[HIVE-9084] Investigate IOContext object initialization problem [Spark Branch]

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Done
• Component/s: Spark
• Assignee: Xuefu Zhang
• Reporter: Xuefu Zhang
• Created: 11/Dec/14 23:51
• Updated: 31/Dec/14 00:43
• Resolved: 31/Dec/14 00:43

Description

In recent ptest run (Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-SPARK-Build/511/testReport), test groupby_multi_single_reducer.q failed w/ the following stacktrace:

java.lang.RuntimeException: Map operator initialization failed
	at org.apache.hadoop.hive.ql.exec.spark.SparkMapRecordHandler.init(SparkMapRecordHandler.java:136)
	at org.apache.hadoop.hive.ql.exec.spark.HiveMapFunction.call(HiveMapFunction.java:54)
	at org.apache.hadoop.hive.ql.exec.spark.HiveMapFunction.call(HiveMapFunction.java:29)
	at org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:167)
	at org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:167)
	at org.apache.spark.rdd.RDD$$anonfun$13.apply(RDD.scala:601)
	at org.apache.spark.rdd.RDD$$anonfun$13.apply(RDD.scala:601)
	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35)
	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263)
	at org.apache.spark.rdd.RDD.iterator(RDD.scala:230)
	at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
	at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
	at org.apache.spark.scheduler.Task.run(Task.scala:56)
	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196)
	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.NullPointerException
	at org.apache.hadoop.hive.ql.io.IOContext.copy(IOContext.java:119)
	at org.apache.hadoop.hive.ql.exec.spark.SparkMapRecordHandler.init(SparkMapRecordHandler.java:97)
	... 16 more

This failure is again about IOContext object, which needs further investigation.

Issue Links

• is related to: HIVE-8920 IOContext problem with multiple MapWorks cloned for multi-insert [Spark Branch]
• is related to: HIVE-8913 Make SparkMapJoinResolver handle runtime skew join [Spark Branch]