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From "Ashwin Ramesh (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-12102) VolumeScanner throttle dropped (fast scan enabled) when there is a corrupt block
Date Fri, 07 Jul 2017 19:10:00 GMT
Ashwin Ramesh created HDFS-12102:
------------------------------------

             Summary: VolumeScanner throttle dropped (fast scan enabled) when there is a corrupt
block
                 Key: HDFS-12102
                 URL: https://issues.apache.org/jira/browse/HDFS-12102
             Project: Hadoop HDFS
          Issue Type: New Feature
          Components: datanode, hdfs
    Affects Versions: 2.8.2
            Reporter: Ashwin Ramesh
            Priority: Minor
             Fix For: 2.8.2


When the Volume scanner sees a corrupt block, it restarts the scan and scans the blocks at
much faster rate with a negligible scan period. This is so that it doesn't take 3 weeks to
report blocks since a corrupt block means increased likelihood that there are more corrupt
blocks.



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