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https://issues.apache.org/jira/browse/HIVE-15889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15865108#comment-15865108
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Thejas M Nair commented on HIVE-15889:
--------------------------------------
Why are we having to use reflection here ?
(I could be missing something that should be obvious, looks like was introduced
long ago in HIVE-8393)
> LLAP: Some tasks still run after hive cli is shutdown
> -----------------------------------------------------
>
> Key: HIVE-15889
> URL: https://issues.apache.org/jira/browse/HIVE-15889
> Project: Hive
> Issue Type: Bug
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Fix For: 2.2.0
>
> Attachments: HIVE-15889.1.patch, HIVE-15889.2.patch,
> HIVE-15889.3.patch
>
>
> E.g: In cross product case, the tight loop in merge join operator ignores any
> interrupt or abort flag checks, causing the tasks to be in running state even
> when the client cli is quit.
> intensionally written cross product query to simulate this.
> {noformat}
> hive> select count(1) from lineitem, orders;;
> {noformat}
> Even when the cli is quit, LLAP would continue executing the task for quite
> sometime. E.g stack trace
> {noformat}
> "TezTaskRunner" #1945 daemon prio=5 os_prio=0 tid=0x00007fe9e43a5000
> nid=0x4c8 runnable [0x00007fc8d881b000]
> java.lang.Thread.State: RUNNABLE
> at
> org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.copyToStandardObject(ObjectInspectorUtils.java:453)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.mergeJoinComputeKeys(CommonMergeJoinOperator.java:603)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.process(CommonMergeJoinOperator.java:207)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource$GroupIterator.next(ReduceRecordSource.java:351)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource.pushRecord(ReduceRecordSource.java:282)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.fetchOneRow(CommonMergeJoinOperator.java:410)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.fetchNextGroup(CommonMergeJoinOperator.java:381)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.doFirstFetchIfNeeded(CommonMergeJoinOperator.java:491)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.process(CommonMergeJoinOperator.java:209)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource$GroupIterator.next(ReduceRecordSource.java:351)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource.pushRecord(ReduceRecordSource.java:282)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.run(ReduceRecordProcessor.java:319)
> at
> org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:185)
> at
> org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:168)
> at
> org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:370)
> 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)
> {noformat}
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