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Posted to hdfs-dev@hadoop.apache.org by "BELUGA BEHR (JIRA)" <ji...@apache.org> on 2018/08/13 00:48:00 UTC

[jira] [Created] (HDFS-13820) Disable CacheReplicationMonitor If No Cached Paths Exist

BELUGA BEHR created HDFS-13820:
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             Summary: Disable CacheReplicationMonitor If No Cached Paths Exist
                 Key: HDFS-13820
                 URL: https://issues.apache.org/jira/browse/HDFS-13820
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: caching
    Affects Versions: 2.10.0, 3.2.0
            Reporter: BELUGA BEHR


Stating with [HDFS-6106] the loop for checking caching is set to be every 30 seconds.

Please implement a way to disable the {{CacheReplicationMonitor}} class if there are no paths specified.  Adding the first cached path to the NameNode should kick off the {{CacheReplicationMonitor}} and when the last one is deleted, the {{CacheReplicationMonitor}} should be disabled again.

Alternatively, provide a configuration flag to turn this feature off altogether.



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