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https://issues.apache.org/jira/browse/HDFS-1553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved HDFS-1553.
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Resolution: Won't Fix
hftp is dead
> Hftp file read should retry a different datanode if the chosen best datanode
> fails to connect to NameNode
> ---------------------------------------------------------------------------------------------------------
>
> Key: HDFS-1553
> URL: https://issues.apache.org/jira/browse/HDFS-1553
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Hairong Kuang
>
> Currently when reading a file through HftpFileSystem interface, namenode
> deterministically selects the "best" datanode from which the file is read.
> But this can cause the read to fail if the best datanode fails to connect to
> namenode because it never tries another datanode.
> The proposed solution is to send a list of datanode candidates when namenode
> redirects the read request to the chosen best datanode. The the datanode
> could redirect the request to the next good datanode when it fails to connect
> to namenode.
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