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From "SammiChen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8410) Add computation time metrics to datanode for ECWorker
Date Thu, 20 Oct 2016 03:03:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15590592#comment-15590592

SammiChen commented on HDFS-8410:

Hi Andrew, thanks for the comments. Yea, It's better to use "final" for the new variable.
Regarding using {{Time.monotonicNow()}} function, it seems this function returns the millisecond
value instead of nanoseconds value. Given this metric is called "Nanoseconds spent by decoding
tasks", I'm not sure if you are suggesting change this metric definition to "Milliseconds"
something. I'd like to known your opinion. 

> Add computation time metrics to datanode for ECWorker
> -----------------------------------------------------
>                 Key: HDFS-8410
>                 URL: https://issues.apache.org/jira/browse/HDFS-8410
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Li Bo
>            Assignee: SammiChen
>         Attachments: HDFS-8410-001.patch, HDFS-8410-002.patch, HDFS-8410-003.patch, HDFS-8410-004.patch
> This is a sub task of HDFS-7674. It adds time metric for ec decode work.

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