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https://issues.apache.org/jira/browse/HADOOP-5897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12724840#action_12724840
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Hudson commented on HADOOP-5897:
--------------------------------
Integrated in Hadoop-Common-trunk #9 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-Common-trunk/9/])
. Promote new name-node metrics to branch 0.20.
> Add more Metrics to Namenode to capture heap usage
> --------------------------------------------------
>
> Key: HADOOP-5897
> URL: https://issues.apache.org/jira/browse/HADOOP-5897
> Project: Hadoop Common
> Issue Type: Improvement
> Components: dfs, metrics
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Fix For: 0.21.0
>
> Attachments: 5897.rel20.patch, stats.1.patch, stats.patch, stats.patch
>
>
> Recently we had GC issues, where Namenode used more heap than usual. There
> was no growth indicated by the data in current Metrics to justify the heap
> usage. Adding more stats such as:
> - Counter to track blocks that are pending deletion
> - BlocksMap hashmap capacity
> - Counter to track excess number of blocks
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