hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11363) Need more diagnosis info when seeing Slow waitForAckedSeqno
Date Thu, 02 Feb 2017 00:45:51 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15849184#comment-15849184
] 

Yongjun Zhang commented on HDFS-11363:
--------------------------------------

Thanks [~xiaochen] for the new rev, except for an extra ":", I'm +1.


> Need more diagnosis info when seeing Slow waitForAckedSeqno
> -----------------------------------------------------------
>
>                 Key: HDFS-11363
>                 URL: https://issues.apache.org/jira/browse/HDFS-11363
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Yongjun Zhang
>            Assignee: Xiao Chen
>              Labels: supportability
>         Attachments: HDFS-11363.01.patch, HDFS-11363.02.patch
>
>
> When client writes a file, it may get the following message when ACK doesn't get back
in a timely manner:
> WARN hdfs.DFSClient: Slow waitForAckedSeqno took 39264ms (threshold=30000ms)
> It would be nice to tell what file it's writing, and what DataNodes are in the pipeline,
together with this message, to facilitate investigating related performance issue.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org


Mime
View raw message