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https://issues.apache.org/jira/browse/HIVE-13249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15194098#comment-15194098
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Alan Gates commented on HIVE-13249:
-----------------------------------
There's already a threadpool in AcidHouseKeeperService. This should use that
rather than having its own separate threadpool.
Once the number of open transactions exceeds the threshold you should require
it to drain a ways below that (maybe 90% of the threshold) before allowing new
transactions. This avoid it constantly lurching in and out of trouble.
> Hard upper bound on number of open transactions
> -----------------------------------------------
>
> Key: HIVE-13249
> URL: https://issues.apache.org/jira/browse/HIVE-13249
> Project: Hive
> Issue Type: Improvement
> Components: Transactions
> Affects Versions: 2.0.0
> Reporter: Wei Zheng
> Assignee: Wei Zheng
> Attachments: HIVE-13249.1.patch
>
>
> We need to have a safeguard by adding an upper bound for open transactions to
> avoid huge number of open-transaction requests, usually due to improper
> configuration of clients such as Storm.
> Once that limit is reached, clients will start failing.
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