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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-3019) Add a metric to track number of slow fsyncs
Date Tue, 24 Apr 2018 00:02:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-3019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16449062#comment-16449062
] 

ASF GitHub Bot commented on ZOOKEEPER-3019:
-------------------------------------------

Github user phunt commented on a diff in the pull request:

    https://github.com/apache/zookeeper/pull/501#discussion_r183571986
  
    --- Diff: docs/zookeeperAdmin.html ---
    @@ -2213,6 +2213,7 @@ <h4>The Four Letter Words</h4>
                   zk_min_latency  0
                   zk_packets_received 70
                   zk_packets_sent 69
    +              zk_num_alive_connections	1
    --- End diff --
    
    Please remove doc/{html,pdf} from PRs - these files are regenerated during commit time
by the committer. (and are a pain to manage wrt the PR merge tool)


> 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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