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Posted to dev@hive.apache.org by "Cliff Resnick (JIRA)" <ji...@apache.org> on 2009/08/31 05:31:32 UTC
[jira] Updated: (HIVE-80) Allow Hive Server to run multiple queries
simulteneously
[ https://issues.apache.org/jira/browse/HIVE-80?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Cliff Resnick updated HIVE-80:
------------------------------
Attachment: org.apache.hadoop.hive.ql.exec.Utilities-ThreadLocal.patch
I'm attaching a patch to org.apache.hadoop.hive.ql.exec.Utilities. Currently this class has a static field instance of type mapredWork. Changing the reference to ThreadLocal has eliminated the race conditions we found while executing several concurrent queries through a simple HiveConnection pool.
> Allow Hive Server to run multiple queries simulteneously
> --------------------------------------------------------
>
> Key: HIVE-80
> URL: https://issues.apache.org/jira/browse/HIVE-80
> Project: Hadoop Hive
> Issue Type: Improvement
> Components: Server Infrastructure
> Reporter: Raghotham Murthy
> Assignee: Neil Conway
> Priority: Critical
> Fix For: 0.4.0
>
> Attachments: hive_input_format_race-2.patch, org.apache.hadoop.hive.ql.exec.Utilities-ThreadLocal.patch
>
>
> Can use one driver object per query.
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