mdayakar opened a new pull request, #6168:
URL: https://github.com/apache/hive/pull/6168
HIVE-27805: Hive server2 connections limits bug
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### What changes were proposed in this pull request?
When
`hive.server2.limit.connections.per.user`/`hive.server2.limit.connections.per.ipaddress`/`hive.server2.limit.connections.per.user.ipaddress`
properties are configured with some positive integer values then the session
requests from same user/same ip/same user:ip are restricted to the value
configured and these counts are getting increased while opening a session and
getting decreased when the session is closed but if session creation/opening
has some issues then these counts are not getting decreased which leads once
the count reaches the configured value no sesions will be created for the same
user/ip/user:ip even though there are no valid/active sessions. Now as a part
of this PR, decreasing the count in all error scenarios when a session
creation/opening fails.
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### Why are the changes needed?
To fix the issue mentioned in HIVE-27805
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### Does this PR introduce _any_ user-facing change?
No
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### How was this patch tested?
Unit tests are added.
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