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From "John Zhuge (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10190) Add DN FSDatasetImpl lock metrics
Date Tue, 22 Mar 2016 15:00:32 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10190?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

John Zhuge updated HDFS-10190:
------------------------------
    Description: 
Add DN FSDatasetImpl lock metrics:
* Number of lock calls
* Contention rate
* Average wait time

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

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

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

    Component/s: performance
                 datanode
        Summary: Add DN FSDatasetImpl lock metrics  (was: Expose FSDatasetImpl lock metrics)

> Add DN FSDatasetImpl lock metrics
> ---------------------------------
>
>                 Key: HDFS-10190
>                 URL: https://issues.apache.org/jira/browse/HDFS-10190
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, performance
>    Affects Versions: 2.8.0
>            Reporter: John Zhuge
>            Assignee: John Zhuge
>
> Add DN FSDatasetImpl lock metrics:
> * Number of lock calls
> * Contention rate
> * Average wait time
> Locks of interest:
> * FsDatasetImpl intrinsic lock
> * FsDatasetImpl.statsLock



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