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https://issues.apache.org/jira/browse/HDFS-4053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13479958#comment-13479958
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Suresh Srinivas commented on HDFS-4053:
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bq. What do people think about changing this in branch-2?
+1 for doing that. BTW please update the release note about the new behavior.
> Increase the default block size
> -------------------------------
>
> Key: HDFS-4053
> URL: https://issues.apache.org/jira/browse/HDFS-4053
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Eli Collins
> Assignee: Eli Collins
> Fix For: 3.0.0
>
> Attachments: hdfs-4053.txt, hdfs-4053.txt, hdfs-4053.txt
>
>
> The default HDFS block size ({{dfs.blocksize}}) has been 64mb forever. 128mb
> works well in practice on today's hardware configurations, most clusters I
> work with use it or higher (eg 256mb). Let's bump to 128mb in trunk for v3.
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