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https://issues.apache.org/jira/browse/HDFS-15384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17125010#comment-17125010
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Yang Yun commented on HDFS-15384:
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Thanks [~ayushtkn] for the answer.
It's reasonable to open a DFSInputStream with '{{read.prefetch.size', but for
the method getLocatedBlocks, if you don't read the code,it's hard to know that
it has a limition. }}
> Method getLocatedBlocks(String src, long start) of DFSClient only return
> partial blocks
> ---------------------------------------------------------------------------------------
>
> Key: HDFS-15384
> URL: https://issues.apache.org/jira/browse/HDFS-15384
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Yang Yun
> Assignee: Yang Yun
> Priority: Minor
> Attachments: HDFS-15384.001.patch
>
>
>
>
> Intuitively, the method getLocatedBlocks(String src, long start) of DFSClient
> will return all blocks after offset ‘start’. But actually it uses
> dfsClientConf.getPrefetchSize() as the length and only return part of blocks.
> I feel it's error-prone and open this Jira for discussion.
>
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