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Posted to hdfs-dev@hadoop.apache.org by "Yang Yun (Jira)" <ji...@apache.org> on 2020/04/15 12:11:00 UTC

[jira] [Created] (HDFS-15280) Datanode delay random time to report block if BlockManager is busy

Yang Yun created HDFS-15280:
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             Summary: Datanode delay random time to report block if BlockManager is busy
                 Key: HDFS-15280
                 URL: https://issues.apache.org/jira/browse/HDFS-15280
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: namenode
            Reporter: Yang Yun
            Assignee: Yang Yun


When many Datanodes are reporting at the same time, the cluster may respond slowly. Limit the concurrent reporting number. If BlockManager is busy, it rejects  new request and the Datanode delay a few random time to report.



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