[jira] [Commented] (HBASE-17448) Export metrics from RecoverableZooKeeper

["Bharath Vissapragada (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-17448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17141588#comment-17141588 ] 

Bharath Vissapragada commented on HBASE-17448:
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[~ckulkarni]/[~apurtell] Are these ZK metrics exposed anywhere? Doesn't look like it to me. I was looking to add a metric for a ZK operation and stumbled up on this.

> Export metrics from RecoverableZooKeeper
> ----------------------------------------
>
>                 Key: HBASE-17448
>                 URL: https://issues.apache.org/jira/browse/HBASE-17448
>             Project: HBase
>          Issue Type: Improvement
>          Components: Zookeeper
>    Affects Versions: 1.3.1
>            Reporter: Andrew Kyle Purtell
>            Assignee: Chinmay Kulkarni
>            Priority: Major
>              Labels: patch
>             Fix For: 1.4.0, 1.4.1, 1.4.2, 2.0.0
>
>         Attachments: HBASE-17448-branch-1.patch, HBASE-17448.patch, HBASE-17448.patch
>
>
> Consider adding instrumentation to RecoverableZooKeeper that exposes metrics on the performance and health of the embedded ZooKeeper client: latency histograms for each op type, number of reconnections, number of ops where a reconnection was necessary to proceed, number of failed ops due to CONNECTIONLOSS, number of failed ops due to SESSIONEXIPRED, number of failed ops due to OPERATIONTIMEOUT. 
> RecoverableZooKeeper is a class in hbase-client so we can hook up the new metrics to both client- and server-side metrics reporters. Probably this metrics source should be a process singleton. 



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