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Posted to dev@hive.apache.org by "Namit Jain (JIRA)" <ji...@apache.org> on 2010/09/27 21:22:34 UTC
[jira] Issue Comment Edited: (HIVE-1671) multithreading on
Context.pathToCS
[ https://issues.apache.org/jira/browse/HIVE-1671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12915440#action_12915440 ]
Namit Jain edited comment on HIVE-1671 at 9/27/10 3:22 PM:
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Are your using HiveServer ?
>> we having 2 threads running at 100%
What do you mean by the above ? Are you setting hive.exec.parallel to true, in which case, I can see the problem happening ?
was (Author: namit):
Are your using HiveServer ?
.bq we having 2 threads running at 100%
What do you mean by the above ? Are you setting hive.exec.parallel to true, in which case, I can see the problem happening ?
> multithreading on Context.pathToCS
> ----------------------------------
>
> Key: HIVE-1671
> URL: https://issues.apache.org/jira/browse/HIVE-1671
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Bennie Schut
> Assignee: Bennie Schut
> Fix For: 0.7.0
>
> Attachments: HIVE-1671-1.patch
>
>
> we having 2 threads running at 100%
> With a stacktrace like this:
> "Thread-16725" prio=10 tid=0x00007ff410662000 nid=0x497d runnable [0x00000000442eb000]
> java.lang.Thread.State: RUNNABLE
> at java.util.HashMap.get(HashMap.java:303)
> at org.apache.hadoop.hive.ql.Context.getCS(Context.java:524)
> at org.apache.hadoop.hive.ql.exec.Utilities.getInputSummary(Utilities.java:1369)
> at org.apache.hadoop.hive.ql.exec.MapRedTask.estimateNumberOfReducers(MapRedTask.java:329)
> at org.apache.hadoop.hive.ql.exec.MapRedTask.setNumberOfReducers(MapRedTask.java:297)
> at org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:84)
> at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:108)
> at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:55)
> at org.apache.hadoop.hive.ql.exec.TaskRunner.run(TaskRunner.java:47)
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