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Posted to hdfs-dev@hadoop.apache.org by "leo sun (Jira)" <ji...@apache.org> on 2023/03/30 07:06:00 UTC

[jira] [Created] (HDFS-16966) Optimize AvailableSpaceVolumeChoosingPolicy to avoid disk hotpoint

leo sun created HDFS-16966:
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             Summary: Optimize AvailableSpaceVolumeChoosingPolicy to avoid disk hotpoint
                 Key: HDFS-16966
                 URL: https://issues.apache.org/jira/browse/HDFS-16966
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: datanode
            Reporter: leo sun


The AvailableSpaceVolumeChoosingPolicy will write the most of replicas into the disks with more available space than others. 
But when a new disk is launched, most write request on this DN will be on this disk, it will cause the disk hotpoint.



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