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Posted to issues@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2016/02/01 19:42:39 UTC
[jira] [Commented] (HIVE-12947) SMB join in tez has
ClassCastException when container reuse is on
[ https://issues.apache.org/jira/browse/HIVE-12947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15126764#comment-15126764 ]
Sergey Shelukhin commented on HIVE-12947:
-----------------------------------------
smb_cache test probably failed due to one of the recent CBO-related changes (user-level explain, strict mode or removal of the strict check), it just needs an update before commit. TestHBaseAggrStatsCacheIntegration needs to be checked locally...
> SMB join in tez has ClassCastException when container reuse is on
> -----------------------------------------------------------------
>
> Key: HIVE-12947
> URL: https://issues.apache.org/jira/browse/HIVE-12947
> Project: Hive
> Issue Type: Bug
> Components: Tez
> Affects Versions: 2.0.0
> Reporter: Vikram Dixit K
> Assignee: Vikram Dixit K
> Priority: Critical
> Attachments: HIVE-12947.1.patch, HIVE-12947.2.patch, HIVE-12947.3.patch
>
>
> SMB join in tez has multiple work items that are connected based on input tag followed by input initialization etc. In case of container re-use, what ends up happening is that we try to reconnect the work items and fail. If we try to work around that issue by recognizing somehow that the cache was in play, we will run into other initialization issues with respect to record readers. So the plan is to disable caching of the SMB work items by clearing out during the close phase.
> {code}
> java.lang.RuntimeException: Map operator initialization failed
> at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.init(MapRecordProcessor.java:247)
> at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:147)
> at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:137)
> at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:344)
> at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:179)
> at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:171)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
> at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:171)
> at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:167)
> at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.ClassCastException: org.apache.hadoop.hive.ql.exec.FileSinkOperator cannot be cast to org.apache.hadoop.hive.ql.exec.DummyStoreOperator
> at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.getJoinParentOp(MapRecordProcessor.java:300)
> at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.getJoinParentOp(MapRecordProcessor.java:302)
> at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.getJoinParentOp(MapRecordProcessor.java:302)
> at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.getJoinParentOp(MapRecordProcessor.java:302)
> at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.getJoinParentOp(MapRecordProcessor.java:302)
> at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.init(MapRecordProcessor.java:189)
> ... 15 more
> {code}
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