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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-9800) Add option to send BlockStateChange logs to alternate async appender
Date Fri, 12 Feb 2016 19:42:18 GMT
Arpit Agarwal created HDFS-9800:
-----------------------------------

             Summary: Add option to send BlockStateChange logs to alternate async appender
                 Key: HDFS-9800
                 URL: https://issues.apache.org/jira/browse/HDFS-9800
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: namenode
    Affects Versions: 2.8.0
            Reporter: Arpit Agarwal


BlockStateChange logs are usually suppressed in production to avoid the performance impact.
It is often useful to enable them for troubleshooting but the verbosity of the logs slows
down the NameNode.

It would be good to have an option to send BlockStateChange logs to an alternate async appender
to limit the performance impact. There would be no change to the default behavior.



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