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Date: Wed, 27 May 2015 08:37:18 +0000 (UTC)
From: "Akira AJISAKA (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HADOOP-11242) Record the time of calling in
 tracing span of IPC server
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    [ https://issues.apache.org/jira/browse/HADOOP-11242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14560642#comment-14560642 ] 

Akira AJISAKA commented on HADOOP-11242:
----------------------------------------

Looks good to me, +1. I used HADOOP-11242-test.patch to delay putting Call into callQueue in 10ms to verify the time is recorded and delayed.

!ScreenShot-test.png!
Yeah! A red dot, which specifies the elapsed time when the Call got out of callQueue, is added > 10ms after the span starts.

> Record the time of calling in tracing span of IPC server
> --------------------------------------------------------
>
>                 Key: HADOOP-11242
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11242
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>            Reporter: Masatake Iwasaki
>            Assignee: Masatake Iwasaki
>            Priority: Minor
>              Labels: BB2015-05-RFC
>         Attachments: HADOOP-11242-test.patch, HADOOP-11242.002.patch, HADOOP-11242.003.patch, HADOOP-11242.1.patch, HADOOP-11242.1.patch, ScreenShot-test.png
>
>
> Current tracing span starts when the Call is put into callQueue. Recording the time of calling is useful to debug.


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