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From "Hua Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9882) Add heartbeatsTotal in Datanode metrics
Date Mon, 07 Mar 2016 04:17:40 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15182559#comment-15182559

Hua Liu commented on HDFS-9882:

Hi [~arpiagariu]

Since NumOps and AvgTime are appended to the metric name, HeartbeatTotalTImeAvgTime would
look verbose and HeartbeatTotalTimeNumOps would appear confusing. We think heartbeatsTotal
may be a good alternative. 

And we described this new metric in metrics.md. Please take a look at it and submit if you
see fit.


> Add heartbeatsTotal in Datanode metrics
> ---------------------------------------
>                 Key: HDFS-9882
>                 URL: https://issues.apache.org/jira/browse/HDFS-9882
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode
>    Affects Versions: 2.7.2
>            Reporter: Hua Liu
>            Assignee: Hua Liu
>            Priority: Minor
>         Attachments: 0001-HDFS-9882.Add-heartbeatsTotal-in-Datanode-metrics.patch, 0002-HDFS-9882.Add-heartbeatsTotal-in-Datanode-metrics.patch,
> Heartbeat latency only reflects the time spent on generating reports and sending reports
to NN. When heartbeats are delayed due to processing commands, this latency does not help
investigation. I would like to propose to add another metric counter to show the total time.

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