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Posted to hdfs-dev@hadoop.apache.org by "Amithsha (JIRA)" <ji...@apache.org> on 2019/02/10 08:43:00 UTC

[jira] [Created] (HDFS-14264) Datanode du -sk command is slow

Amithsha created HDFS-14264:
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             Summary: Datanode du -sk command is slow
                 Key: HDFS-14264
                 URL: https://issues.apache.org/jira/browse/HDFS-14264
             Project: Hadoop HDFS
          Issue Type: Improvement
    Affects Versions: 2.7.1
            Reporter: Amithsha


Datanode consuming more time on du -sk command as well as creating heavy IO on disk. In our prod systems, each disk of dfs usage is 3Tb, to caculate it, the datanode will spend 10-20min Avg time. Also nodemanagers are running on the same box during this du -sk operation could see heavy IO on disk.

Datanode should cache the usage and also not be cleared by any other process.



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