Rajesh Balamohan created HIVE-22753:
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Summary: Fix gradual mem leak: Operationlog related appenders
should be cleared up on errors
Key: HIVE-22753
URL: https://issues.apache.org/jira/browse/HIVE-22753
Project: Hive
Issue Type: Improvement
Components: HiveServer2
Reporter: Rajesh Balamohan
Attachments: image-2020-01-21-11-14-37-911.png
In case of exception in SQLOperation, operational log does not get cleared up.
This causes gradual build up of HushableRandomAccessFileAppender causing HS2 to
OOM after some time.
!image-2020-01-21-11-14-37-911.png|width=431,height=267!
!2Q==|width=487,height=204!
Prod instance mem
!Z|width=531,height=159!
Each HushableRandomAccessFileAppender holds internal ref to
RandomAccessFileAppender which holds a 256 KB bytebuffer, causing the mem leak.
Related ticket: HIVE-18820
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