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Posted to hdfs-dev@hadoop.apache.org by "Viraj Jasani (Jira)" <ji...@apache.org> on 2022/03/25 16:27:00 UTC

[jira] [Created] (HDFS-16521) DFS API to retrieve slow datanodes

Viraj Jasani created HDFS-16521:
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             Summary: DFS API to retrieve slow datanodes
                 Key: HDFS-16521
                 URL: https://issues.apache.org/jira/browse/HDFS-16521
             Project: Hadoop HDFS
          Issue Type: New Feature
            Reporter: Viraj Jasani
            Assignee: Viraj Jasani


In order to build some automation around slow datanodes that regularly show up in the slow peer tracking report, e.g. decommission such nodes and queue them up for external processing and add them back later to the cluster after fixing issues etc, we should expose DFS API to retrieve all slow nodes at a given time.

Providing such API would also help add an additional option to "dfsadmin -report" that lists slow datanodes info for operators to take a look, specifically useful filter for larger clusters.



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