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https://issues.apache.org/jira/browse/HADOOP-1946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12531947
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Hudson commented on HADOOP-1946:
--------------------------------
Integrated in Hadoop-Nightly #258 (See
[http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/258/])
> du should be not called on every heartbeat
> ------------------------------------------
>
> Key: HADOOP-1946
> URL: https://issues.apache.org/jira/browse/HADOOP-1946
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.15.0
> Reporter: Konstantin Shvachko
> Assignee: Hairong Kuang
> Priority: Blocker
> Fix For: 0.15.0
>
> Attachments: du.patch, du.patch, du2.patch
>
>
> Data-nodes run very slow. The reason is that du is executed on each and every
> heartbeat.
> Looks like the condition in DU.getUsed(), which triggers the refresh of
> cached values, should be reversed.
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