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Posted to hdfs-issues@hadoop.apache.org by "Hairong Kuang (JIRA)" <ji...@apache.org> on 2010/10/14 20:34:33 UTC
[jira] Commented: (HDFS-1457) Limit transmission rate when
transfering image between primary and secondary NNs
[ https://issues.apache.org/jira/browse/HDFS-1457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12921067#action_12921067 ]
Hairong Kuang commented on HDFS-1457:
-------------------------------------
This jira description copied Lu's [comment|https://issues.apache.org/jira/browse/HDFS-1435?focusedCommentId=12920929&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12920929] from HDFS-1435.
> 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
>
>
> 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.
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