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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-803) Reducing memory consumption on Namenode : Part 1
Date Tue, 13 Feb 2007 19:12:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12472834
] 

Hairong Kuang commented on HADOOP-803:
--------------------------------------

+1 code reviewed. Raghu, you might need to regenerate the patch.

> Reducing memory consumption on Namenode : Part 1
> ------------------------------------------------
>
>                 Key: HADOOP-803
>                 URL: https://issues.apache.org/jira/browse/HADOOP-803
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Raghu Angadi
>         Assigned To: Raghu Angadi
>             Fix For: 0.12.0
>
>         Attachments: block-refs-2.patch, block-refs-3.patch, block-refs-5.patch, HADOOP-803-2.patch,
HADOOP-803.patch, HADOOP-803_3.patch, HADOOP-803_4.patch, NameNodeMemoryHogs.txt
>
>
> There appears to be some places in Namenode that allow reducing memory consumption without
intrusive code or feature changes. This bug is an initial attempt making those changes. Please
include your thoughts as well. 
> One change I am planning to make : 
> Currently one copy of each block exists for each of the replicas and one copy for blockMap.
I think they are all supposed to be same.

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