[HIVE-10009] LazyObjectInspectorFactory is not thread safe [Spark Branch]

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: spark-branch
• Fix Version/s: 1.2.0
• Assignee: Jimmy Xiang
• Reporter: Jimmy Xiang
• Created: 18/Mar/15 17:35
• Updated: 05/Jun/15 20:03
• Resolved: 19/Mar/15 00:23

Description

LazyObjectInspectorFactory is not thread safe, which causes random failures in multiple thread environment such as Hive on Spark. We got exceptions like below

java.lang.RuntimeException: Map operator initialization failed: java.lang.ClassCastException: org.apache.hadoop.hive.serde2.lazy.objectinspector.LazySimpleStructObjectInspector cannot be cast to org.apache.hadoop.hive.serde2.objectinspector.SettableStructObjectInspector
	at org.apache.hadoop.hive.ql.exec.spark.SparkMapRecordHandler.init(SparkMapRecordHandler.java:127)
	at org.apache.hadoop.hive.ql.exec.spark.HiveMapFunction.call(HiveMapFunction.java:55)
	at org.apache.hadoop.hive.ql.exec.spark.HiveMapFunction.call(HiveMapFunction.java:30)
	at org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:170)
	at org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:170)
	at org.apache.spark.rdd.RDD$$anonfun$14.apply(RDD.scala:634)
	at org.apache.spark.rdd.RDD$$anonfun$14.apply(RDD.scala:634)
	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35)
	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:277)
	at org.apache.spark.rdd.RDD.iterator(RDD.scala:244)
	at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
	at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
	at org.apache.spark.scheduler.Task.run(Task.scala:64)
	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:203)
	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:745)
Caused by: java.lang.ClassCastException: org.apache.hadoop.hive.serde2.lazy.objectinspector.LazySimpleStructObjectInspector cannot be cast to org.apache.hadoop.hive.serde2.objectinspector.SettableStructObjectInspector
	at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters.getConverter(ObjectInspectorConverters.java:154)
	at org.apache.hadoop.hive.ql.exec.MapOperator.initObjectInspector(MapOperator.java:199)
	at org.apache.hadoop.hive.ql.exec.MapOperator.setChildren(MapOperator.java:355)
	at org.apache.hadoop.hive.ql.exec.spark.SparkMapRecordHandler.init(SparkMapRecordHandler.java:92)
	... 16 more