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

[ASF GitHub Bot (JIRA)]

    [ 
https://issues.apache.org/jira/browse/ZOOKEEPER-3019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16449448#comment-16449448
 ] 

ASF GitHub Bot commented on ZOOKEEPER-3019:
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Github user nkalmar commented on the issue:

    https://github.com/apache/zookeeper/pull/501
  
    I will do the 3.4 PR once the comment changes for master are finalized. 


> 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, 3.6.0
>            Reporter: Norbert Kalmar
>            Assignee: Norbert Kalmar
>            Priority: Major
>             Fix For: 3.5.4, 3.6.0, 3.4.13
>
>
> 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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