[jira] Updated: (HIVE-1539) Concurrent metastore threading problem

["Bennie Schut (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-1539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bennie Schut updated HIVE-1539:
-------------------------------

    Attachment: HIVE-1539.patch

2.2.0-m2 can now be found on maven so the previous patch can be discarded and you can simple update the ivy/libraries/properties file to use datanucleus 2.2.0-m2.

since -m2 is a milestone release I'm not sure if we would want to include this or wait for 2.2.0 release.

> 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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