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impala/common
Bharath Vissapragada 5d306eff7f IMPALA-4822: Implement dynamic log level changes
Very often we have to change the logging levels
of Impalads and Catalog server for debugging purposes.
Currently, there is no way to do that without a restart
of the daemons, which is not a viable option in production
deployments.

This patch addresses this supportability gap by exposing
the ability to set dynamic logging levels using a simple
web endpoint on Impalad/Catalog/Statestore web pages.

This includes setting VLOG levels (equivalent to --v flag)
as well as setting log4j levels on the Frontend and the
Catalog JVMs.

Change-Id: I588418e9bcb0b66d33138baf96207a5a35bfbd63
Reviewed-on: http://gerrit.cloudera.org:8080/5792
Reviewed-by: Bharath Vissapragada <bharathv@cloudera.com>
Tested-by: Impala Public Jenkins
2017-03-07 07:53:14 +00:00
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