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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