Antal Sinkovits created HIVE-26155:
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Summary: 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
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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