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Posted to hdfs-issues@hadoop.apache.org by "hu xiaodong (JIRA)" <ji...@apache.org> on 2018/01/23 07:53:00 UTC
[jira] [Commented] (HDFS-13046) consider load of datanodes when
read blocks of file
[ https://issues.apache.org/jira/browse/HDFS-13046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16335471#comment-16335471 ]
hu xiaodong commented on HDFS-13046:
------------------------------------
I submit a sample patch. welcome to discuss. thank you.
> consider load of datanodes when read blocks of file
> ---------------------------------------------------
>
> Key: HDFS-13046
> URL: https://issues.apache.org/jira/browse/HDFS-13046
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: hu xiaodong
> Assignee: hu xiaodong
> Priority: Minor
> Attachments: HDFS-13046-sample.patch
>
>
> When sorting block locations, we just consider the distance of datanodes. can we consider the load of datanodes? We can add a configuration such as 'dfs.namenode.reading.considerLoad', if set to true, then sort the blocklocations by load of the datanodes, otherwise sort by distance.
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