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Posted to hdfs-issues@hadoop.apache.org by "Hairong Kuang (JIRA)" <ji...@apache.org> on 2010/09/03 01:41:33 UTC

[jira] Created: (HDFS-1370) NameNode should limit the number of blocks to return when balancer asks for a partial blocks map

NameNode should limit the number of blocks to return when balancer asks for a partial blocks map
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                 Key: HDFS-1370
                 URL: https://issues.apache.org/jira/browse/HDFS-1370
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: name-node
    Affects Versions: 0.22.0
            Reporter: Hairong Kuang
            Assignee: Hairong Kuang
             Fix For: 0.22.0


This has a couple of advantages:
1. limit the response size;
2. limit the amount of time when serving getBlocks call, hence improving NN's responsiveness.

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[jira] Updated: (HDFS-1370) NameNode should limit the number of blocks to return when balancer asks for a partial blocks map

Posted by "Hairong Kuang (JIRA)" <ji...@apache.org>.

     [ https://issues.apache.org/jira/browse/HDFS-1370?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hairong Kuang updated HDFS-1370:
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    Attachment: getBlocksLimit.patch

Here comes the patch!

> NameNode should limit the number of blocks to return when balancer asks for a partial blocks map
> ------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-1370
>                 URL: https://issues.apache.org/jira/browse/HDFS-1370
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.22.0
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.22.0
>
>         Attachments: getBlocksLimit.patch
>
>
> This has a couple of advantages:
> 1. limit the response size;
> 2. limit the amount of time when serving getBlocks call, hence improving NN's responsiveness.

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