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Posted to hdfs-dev@hadoop.apache.org by "zhanghaobo (Jira)" <ji...@apache.org> on 2021/12/02 08:39:00 UTC

[jira] [Created] (HDFS-16368) DFSAdmin supports refresh topology info without restarting namenode

zhanghaobo created HDFS-16368:
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             Summary:  DFSAdmin supports refresh topology info without restarting namenode
                 Key: HDFS-16368
                 URL: https://issues.apache.org/jira/browse/HDFS-16368
             Project: Hadoop HDFS
          Issue Type: New Feature
          Components: dfsadmin, namanode
    Affects Versions: 3.3.1, 2.7.7
            Reporter: zhanghaobo
         Attachments: 0001.patch

Currently in HDFS, if we update the rack info for rack-awareness, we may need to rolling restart namenodes to let it be effective. If cluster is large, the cost time of rolling restart namenodes is very log. So, we develope a method to refresh topology info without rolling restart namenodes.



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