Qi Zhu created HDFS-15924:
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Summary: Log4j will cause Server handler blocked when audit log
boom.
Key: HDFS-15924
URL: https://issues.apache.org/jira/browse/HDFS-15924
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Qi Zhu
Attachments: image-2021-03-26-16-18-03-341.png,
image-2021-03-26-16-19-42-165.png
!image-2021-03-26-16-18-03-341.png|width=707,height=234!
!image-2021-03-26-16-19-42-165.png|width=824,height=198!
The thread blocked when audit log boom show in above.
Such as [https://dzone.com/articles/log4j-thread-deadlock-case] , it seems the
same case when heavy load, should we update to Log4j2 or other things we can do
to improve it in heavy audit log.
cc [~weichiu] [~hexiaoqiao] [~ayushtkn] [~shv] [~ferhui]
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