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https://issues.apache.org/jira/browse/HIVE-4000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13579591#comment-13579591
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Owen O'Malley commented on HIVE-4000:
-------------------------------------
The kind of query that is creating the problem looks like:
{code}
from Tbl
insert ...
insert ...
{code}
The customer sees the problem with 50 or more inserts.
> Hive client goes into infinite loop at 100% cpu
> -----------------------------------------------
>
> Key: HIVE-4000
> URL: https://issues.apache.org/jira/browse/HIVE-4000
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.9.0
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.10.1
>
> Attachments: HIVE-4000.D8493.1.patch
>
>
> The Hive client starts multiple threads to track the progress of the
> MapReduce jobs. Unfortunately those threads access several static HashMaps
> that are not protected by locks. When the HashMaps are modified, they
> sometimes cause race conditions that lead to the client threads getting stuck
> in infinite loops.
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