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Date: Fri, 7 Jan 2011 02:45:50 -0500 (EST)
From: "Bennie Schut (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Subject: [jira] Commented: (HIVE-1539) Concurrent metastore threading
 problem
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    [ https://issues.apache.org/jira/browse/HIVE-1539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12978665#action_12978665 ] 

Bennie Schut commented on HIVE-1539:
------------------------------------

Thanks Ashutosh, I was waiting for the test result and as you predicted just got a build failed. 

> 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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