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https://issues.apache.org/jira/browse/HIVE-26155?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HIVE-26155 started by Antal Sinkovits.
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> Create a new connection pool for compaction
> -------------------------------------------
>
>                 Key: HIVE-26155
>                 URL: https://issues.apache.org/jira/browse/HIVE-26155
>             Project: Hive
>          Issue Type: Improvement
>          Components: Standalone Metastore
>            Reporter: Antal Sinkovits
>            Assignee: Antal Sinkovits
>            Priority: Major
>              Labels: compaction
>
> Currently the TxnHandler uses 2 connection pools to communicate with the HMS: 
> the default one and one for mutexing. If compaction is configured incorrectly 
> (e.g. too many Initiators are running on the same db) then compaction can use 
> up all the connections in the default connection pool and all user queries 
> can get stuck.
> We should have a separate connection pool (configurable size) just for 
> compaction-related activities.



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