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Posted to dev@hive.apache.org by "John Sichi (JIRA)" <ji...@apache.org> on 2010/12/01 02:03:14 UTC
[jira] Commented: (HIVE-1539) Concurrent metastore threading
problem
[ https://issues.apache.org/jira/browse/HIVE-1539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12965515#action_12965515 ]
John Sichi commented on HIVE-1539:
----------------------------------
According to the datanucleus website, 2.2.0 is scheduled for 10-Dec, so let's wait for it.
> Concurrent metastore threading problem
> ---------------------------------------
>
> Key: HIVE-1539
> URL: https://issues.apache.org/jira/browse/HIVE-1539
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Affects Versions: 0.7.0
> Reporter: Bennie Schut
> Assignee: Bennie Schut
> Attachments: ClassLoaderResolver.patch, HIVE-1539.patch, thread_dump_hanging.txt
>
>
> When running hive as a service and running a high number of queries concurrently I end up with multiple threads running at 100% cpu without any progress.
> Looking at these threads I notice this thread(484e):
> at org.apache.hadoop.hive.metastore.ObjectStore.getMTable(ObjectStore.java:598)
> But on a different thread(63a2):
> at org.apache.hadoop.hive.metastore.model.MStorageDescriptor.jdoReplaceField(MStorageDescriptor.java)
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