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https://issues.apache.org/jira/browse/HDFS-1957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035789#comment-13035789
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Todd Lipcon commented on HDFS-1957:
-----------------------------------
Thanks for writing this! A few comments:
bq. The reads are done via HTTPS,
I believe it only uses HTTP by default.
bq. <p>HFTP is primarily useful if you have multiple HDFS clusters and you need
to move data from one to another.</p>
Should point out its most common use case: HFTP is wire-compatible even between
different versions of HDFS - eg you can copy from a previous major release to a
cluster running a new one, which is not true of the hdfs:// protocol.
If possible, it would be nice to add a sample command line using distcp with
hftp:// as the source and hdfs:// as the destination. I bet if you search the
mailing list you can find a good example command line.
> Documentation for HFTP
> ----------------------
>
> Key: HDFS-1957
> URL: https://issues.apache.org/jira/browse/HDFS-1957
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs client
> Affects Versions: 0.23.0
> Reporter: Ari Rabkin
> Assignee: Ari Rabkin
> Priority: Minor
> Fix For: 0.23.0
>
> Attachments: HDFS-1957.patch
>
>
> There should be some documentation for HFTP.
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