hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1457) Limit transmission rate when transfering image between primary and secondary NNs
Date Fri, 29 Oct 2010 23:05:22 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12926494#action_12926494
] 

Hairong Kuang commented on HDFS-1457:
-------------------------------------

In DataXceiver, I already introduced a throttler for the purpose of balancer. Could we use
Throttler to limit transmission rate instead?

> Limit transmission rate when transfering image between primary and secondary NNs
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-1457
>                 URL: https://issues.apache.org/jira/browse/HDFS-1457
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.22.0
>            Reporter: Hairong Kuang
>             Fix For: 0.22.0
>
>         Attachments: checkpoint-limitandcompress.patch
>
>
> If the fsimage is very big. The network is full in a short time when SeconaryNamenode
do checkpoint, leading to Jobtracker access Namenode to get relevant file data to fail in
job initialization phase. So we limit transmission speed and compress transmission to resolve
the problem. 

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message