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Posted to hdfs-issues@hadoop.apache.org by "Felix N (Jira)" <ji...@apache.org> on 2026/01/30 09:12:00 UTC

[jira] [Created] (HDFS-17878) Reduce frequency of getDatanodeListForReport calls for metrics

Felix N created HDFS-17878:
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             Summary: Reduce frequency of getDatanodeListForReport calls for metrics
                 Key: HDFS-17878
                 URL: https://issues.apache.org/jira/browse/HDFS-17878
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Felix N
            Assignee: Felix N


getDatanodeListForReport is called by a lot of metrics method while holding synchronized lock, interfering with more critical ops like datanodeReport while not having critical data (metrics). Best to reduce the frequency of calls to this method.



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