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https://issues.apache.org/jira/browse/HIVE-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12867693#action_12867693
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Arvind Prabhakar commented on HIVE-80:
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I wanted to fix this JIRA and so started looking at it. From what I have
observed it appears that the {{HiveServer}} *is* multi-thread capable.
Specifically:
* The {{HiveServer}} is using a {{TThreadPoolServer}} which is multi-threaded.
* The {{ThriftHiveProcessorFactory}} overrides the {{getProcessor()}} call and
returns a new instance of {{HiveServerHandler}} on every invokation.
* Every instance of {{HiveServerHandler}} has its own thread local session
state and a private driver instance.
* Query execution is thread safe thanks to HIVE-77.
Give the above, I believe that this JIRA should be marked closed and resolved.
If you think I missed something in my analysis, can you please point that out?
> 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
> Attachments: hive_input_format_race-2.patch
>
>
> Can use one driver object per query.
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