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Posted to hdfs-dev@hadoop.apache.org by "tomscut (Jira)" <ji...@apache.org> on 2021/06/17 15:27:00 UTC

[jira] [Created] (HDFS-16076) Avoid using slow DataNodes for reading by sorting locations

tomscut created HDFS-16076:
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             Summary: Avoid using slow DataNodes for reading by sorting locations
                 Key: HDFS-16076
                 URL: https://issues.apache.org/jira/browse/HDFS-16076
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: tomscut
            Assignee: tomscut


After sorting the expected location list will be: live -> slow -> stale -> staleAndSlow -> entering_maintenance -> decommissioned. This reduces the probability that slow nodes will be used for reading.



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