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Posted to hdfs-dev@hadoop.apache.org by "John Zhuge (JIRA)" <ji...@apache.org> on 2016/03/22 05:22:25 UTC

[jira] [Created] (HDFS-10190) Expose FSDatasetImpl lock metrics

John Zhuge created HDFS-10190:
---------------------------------

             Summary: Expose FSDatasetImpl lock metrics
                 Key: HDFS-10190
                 URL: https://issues.apache.org/jira/browse/HDFS-10190
             Project: Hadoop HDFS
          Issue Type: Improvement
    Affects Versions: 2.8.0
            Reporter: John Zhuge
            Assignee: John Zhuge


Expose FSDatasetImpl lock metrics:
* Number of lock calls
* Contention rate
* Average wait time

Locks of interest:
* FsDatasetImpl intrinsic lock
* FsDatasetImpl.statsLock



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