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https://issues.apache.org/jira/browse/HIVE-1671?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bennie Schut reassigned HIVE-1671:
----------------------------------
Assignee: Bennie Schut
> 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
>
>
> 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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