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https://issues.apache.org/jira/browse/HIVE-7624?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rui Li reassigned HIVE-7624:
----------------------------
Assignee: Rui Li
> Reduce operator initialization failed when running multiple MR query on spark
> -----------------------------------------------------------------------------
>
> Key: HIVE-7624
> URL: https://issues.apache.org/jira/browse/HIVE-7624
> Project: Hive
> Issue Type: Bug
> Components: Spark
> Reporter: Rui Li
> Assignee: Rui Li
>
> The following error occurs when I try to run a query with multiple reduce
> works (M->R->R):
> {quote}
> 14/08/05 12:17:07 ERROR Executor: Exception in task 0.0 in stage 2.0 (TID 1)
> java.lang.RuntimeException: Reduce operator initialization failed
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecReducer.configure(ExecReducer.java:170)
> at
> org.apache.hadoop.hive.ql.exec.spark.HiveReduceFunction.call(HiveReduceFunction.java:53)
> at
> org.apache.hadoop.hive.ql.exec.spark.HiveReduceFunction.call(HiveReduceFunction.java:31)
> at
> org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:164)
> at
> org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:164)
> at org.apache.spark.rdd.RDD$$anonfun$13.apply(RDD.scala:596)
> at org.apache.spark.rdd.RDD$$anonfun$13.apply(RDD.scala:596)
> at
> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:229)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
> at org.apache.spark.scheduler.Task.run(Task.scala:54)
> at
> org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:199)
> 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.RuntimeException: cannot find field reducesinkkey0 from
> [0:_col0]
> at
> org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.getStandardStructFieldRef(ObjectInspectorUtils.java:415)
> at
> org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector.getStructFieldRef(StandardStructObjectInspector.java:147)
> …
> {quote}
> I suspect we're applying the reduce function in wrong order.
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