[jira] [Assigned] (ZOOKEEPER-3019) Add a metric to track number of slow fsyncs

[Michael Han (JIRA)]

     [ 
https://issues.apache.org/jira/browse/ZOOKEEPER-3019?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Michael Han reassigned ZOOKEEPER-3019:
--------------------------------------

    Assignee: Norbert Kalmar

> Add a metric to track number of slow fsyncs
> -------------------------------------------
>
>                 Key: ZOOKEEPER-3019
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3019
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: jmx, server
>    Affects Versions: 3.5.3, 3.4.11
>            Reporter: Norbert Kalmar
>            Assignee: Norbert Kalmar
>            Priority: Major
>
> Add jmx bean and Command to ZooKeeper server to expose the the number of slow 
> fsyncs as a metric.
> FileTxnLog.commit() should count the number of times fsync exceeds 
> fsyncWarningThresholdMS.



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