[jira] [Comment Edited] (HIVE-23010) IllegalStateException in tez.ReduceRecordProcessor when containers are being reused

["Wei Zhang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-23010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17520364#comment-17520364 ] 

Wei Zhang edited comment on HIVE-23010 at 4/11/22 7:40 AM:
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This is because the mergejoin operator will be added as the  dummyoperatore's child during the first attempt run, and the mergeworklist is cached across different attempts.


was (Author: zhangweilst):
This is because the mergejoin operator will be added as the  dummyoperatore's child, and the mergeworklist is cached across different attempts.

> IllegalStateException in tez.ReduceRecordProcessor when containers are being reused
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-23010
>                 URL: https://issues.apache.org/jira/browse/HIVE-23010
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 3.1.0
>            Reporter: Sebastian Klemke
>            Priority: Major
>         Attachments: simplified-explain.txt
>
>
> When executing a query in Hive that runs a filesink, mergejoin and two group by operators in a single reduce vertex (reducer 2 in [^simplified-explain.txt]), the following exception occurs non-deterministically:
> {code:java}
> java.lang.RuntimeException: java.lang.IllegalStateException: Was expecting dummy store operator but found: FS[17]
>         at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:296)
>         at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:250)
>         at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:374)
>         at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:73)
>         at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:61)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:422)
>         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
>         at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:61)
>         at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:37)
>         at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
>         at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125)
>         at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:69)
>         at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>         at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.IllegalStateException: Was expecting dummy store operator but found: FS[17]
>         at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.getJoinParentOp(ReduceRecordProcessor.java:421)
>         at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.getJoinParentOp(ReduceRecordProcessor.java:425)
>         at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.getJoinParentOp(ReduceRecordProcessor.java:425)
>         at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.getJoinParentOp(ReduceRecordProcessor.java:425)
>         at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.init(ReduceRecordProcessor.java:148)
>         at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:266)
>         ... 16 more
> {code}
> Looking at Yarn logs, IllegalStateException occurs in a container if and only if
>  * the container has been running a task attempt of "Reducer 2" successfully before
>  * the container is then being reused for another task attempt of the same "Reducer 2" vertex
> The same query runs fine with tez.am.container.reuse.enabled=false.
> Apparently, this error occurs deterministically within a container that is being reused for multiple task attempts of the same reduce vertex.
> We have not been able to reproduce this error deterministically or with a smaller execution plan due to low probability of container reuse for same vertex.



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