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Rui Li commented on HIVE-7431: ------------------------------ The original exception is: {quote} org.apache.hadoop.hive.ql.metadata.HiveException: Hive internal error: cannot find parent in the child operator! at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:365) at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.configure(ExecMapper.java:133) at org.apache.hadoop.hive.ql.exec.spark.HiveMapFunction.call(HiveMapFunction.java:60) at org.apache.hadoop.hive.ql.exec.spark.HiveMapFunction.call(HiveMapFunction.java:35) at org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:161) at org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:161) at org.apache.spark.rdd.RDD$$anonfun$12.apply(RDD.scala:559) at org.apache.spark.rdd.RDD$$anonfun$12.apply(RDD.scala:559) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262) at org.apache.spark.rdd.RDD.iterator(RDD.scala:229) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:158) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:99) at org.apache.spark.scheduler.Task.run(Task.scala:51) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:183) 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) {quote} > When run on spark cluster, some spark tasks may fail > ---------------------------------------------------- > > Key: HIVE-7431 > URL: https://issues.apache.org/jira/browse/HIVE-7431 > Project: Hive > Issue Type: Bug > Reporter: Rui Li > > When running queries on spark, some spark tasks fail (usually the first > couple of tasks) with the following stack trace: > {quote} > org.apache.hadoop.hive.ql.exec.mr.ExecMapper.configure(ExecMapper.java:154) > org.apache.hadoop.hive.ql.exec.spark.HiveMapFunction.call(HiveMapFunction.java:60) > org.apache.hadoop.hive.ql.exec.spark.HiveMapFunction.call(HiveMapFunction.java:35) > org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:161) > org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$7$1.apply(JavaRDDLike.scala:161) > org.apache.spark.rdd.RDD$$anonfun$12.apply(RDD.scala:559) > org.apache.spark.rdd.RDD$$anonfun$12.apply(RDD.scala:559) > org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35) > org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262) > org.apache.spark.rdd.RDD.iterator(RDD.scala:229) > org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:158) > ... > {quote} > Observed for spark standalone cluster. Not verified for spark on yarn or > mesos. > NO PRECOMMIT TESTS. This is for spark branch only. -- This message was sent by Atlassian JIRA (v6.2#6252)