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Date: Fri, 30 May 2014 17:07:02 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12716277.1400829911818.48496.1401469622438@arcas>
In-Reply-To: <JIRA.12716277.1400829911818@arcas>
References: <JIRA.12716277.1400829911818@arcas>
Subject: [jira] [Commented] (HBASE-11240) Print hdfs pipeline when hlog's
 sync is slow
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    [ https://issues.apache.org/jira/browse/HBASE-11240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14013944#comment-14013944 ] 

stack commented on HBASE-11240:
-------------------------------

[~liushaohui] Patch looks good to me.  You fellas doing htrace?  Will commit later today unless other comment/objection.

> Print hdfs pipeline when hlog's sync is slow
> --------------------------------------------
>
>                 Key: HBASE-11240
>                 URL: https://issues.apache.org/jira/browse/HBASE-11240
>             Project: HBase
>          Issue Type: Improvement
>          Components: wal
>            Reporter: Liu Shaohui
>            Assignee: Liu Shaohui
>             Fix For: 0.99.0
>
>         Attachments: HBASE-11240-trunk-v1.diff
>
>
> Sometimes the slow sync of hlog writer is because there is an abnormal datanode in the pipeline. So it will be helpful to print the pipeline of slow sync to diagnose those problems.
> The ultimate solution is to join the trace of HBase and HDFS.


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