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https://issues.apache.org/jira/browse/HADOOP-3865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12618572#action_12618572
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Konstantin Shvachko commented on HADOOP-3865:
---------------------------------------------

- I agree, metrics should not shutdown the name-node, it should be the other 
way around.
- Also we probably can get rid of the {{FSNamesystemMetrics.fsNameSystem}} 
completely since it can be accessed using static method 
{{FSNamesystem.getFSNamesystem()}} and set to a local variable where necessary.
- Could you please remove 3 redundant imports in FSNamesystemMetrics.java.

> SecondaryNameNode runs out of memory
> ------------------------------------
>
>                 Key: HADOOP-3865
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3865
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.18.0
>            Reporter: Lohit Vijayarenu
>            Assignee: Lohit Vijayarenu
>            Priority: Blocker
>             Fix For: 0.18.0
>
>         Attachments: HADOOP-3865-18.patch, HADOOP-3865-18.patch, 
> HADOOP-3865-trunk.patch, HADOOP-3865-trunk.patch
>
>
> SecondaryNameNode has memory leak. If we leave secondary namenode to run for 
> a while doing several checkpoints it runs out of heap.

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