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https://issues.apache.org/jira/browse/HIVE-1539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12978538#action_12978538
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Ashutosh Chauhan commented on HIVE-1539:
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@Bennie,
Since this bug was filed, we upgraded from 2.0.3 to 2.1.1 (in HIVE-1609) Some
bugs then showed up which were attributed to that jdo lib upgrade (HIVE-1853)
so it was rolled back to 2.0.3 Investigation is still on for them in HIVE-1862
So, before committing to still higher version of jdo 2.2.0 we need to make sure
it doesn't result in test case failure listed in HIVE-1862.
> 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-1539-1.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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