Ádám Szita created HIVE-26740:
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Summary: HS2 makes direct connections to HMS backend DB due to
Compaction/StatsUpdater
Key: HIVE-26740
URL: https://issues.apache.org/jira/browse/HIVE-26740
Project: Hive
Issue Type: Bug
Reporter: Ádám Szita
Assignee: Ádám Szita
HIVE-20172 solved an issue where HMS was running the compaction worker, and
StatUpdater thus ran in the very same JVM causing kerberos issues while
connecting to "itself". The fix was to update HMS URI setting to empty string.
This way HMS wouldn't have to go around itself to connect to itself :)
But.. this is not correct anymore, as Hive doesn't support running the
compaction worker on HMS side anymore, but only on HS2. So in any case this
code part ends up executed in HS2, where an embedded HMS will be created due to
this empty string URIs config, and eventually will open connections directly to
HMS backend DB.
We need to remove this setting as it was fixing something that is not relevant
anymore.
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