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Posted to hdfs-dev@hadoop.apache.org by "Viraj Jasani (Jira)" <ji...@apache.org> on 2021/06/26 17:02:00 UTC

[jira] [Created] (HDFS-16090) Fine grained locking for datanodeNetworkCounts

Viraj Jasani created HDFS-16090:
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             Summary: Fine grained locking for datanodeNetworkCounts
                 Key: HDFS-16090
                 URL: https://issues.apache.org/jira/browse/HDFS-16090
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Viraj Jasani
            Assignee: Viraj Jasani


While incrementing DataNode network error count, we lock entire LoadingCache in order to increment network count of specific host. We should provide fine grained concurrency for this update because locking entire cache is redundant and could impact performance while incrementing network count for multiple hosts.



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