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HDFS, mail # dev - Deprecate hftp / hsftp


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Re: Deprecate hftp / hsftp
lohit 2013-11-26, 21:51
Curious to know usage of webhdfs for Hadoop 1.0. Are people using it in
production?
Reason I ask is because we use lot of hftp to transfer data between Hadoop
1.0 and Hadoop 2.0 as of today.
Removing hftp would mean that anyone using Hadoop 1.0 and Hadoop 3.0 would
have to move to webhdfs, right?

2013/11/26 Suresh Srinivas <[EMAIL PROTECTED]>

> Thanks Haohui for all your hard work in this area. I am +1 on this
> proposal.
>
>
> On Tue, Nov 26, 2013 at 12:50 PM, Haohui Mai <[EMAIL PROTECTED]> wrote:
>
> > Hi,
> >
> > Recently I've been focusing on fixing hftp / hsftp / webhdfs / swebhdfs
> in
> > various set ups. Now we have reached the state that all the above file
> > systems can work in both secure and insecure clusters, and transfer data
> > through both http and https.
> >
> > Taking a step back, these file systems are very similar, and I'm
> wondering
> > whether it is a good time to deprecate hftp and hsftp in Hadoop right
> now.
> >
> > The main reason is that hftp / hsftp only provides a strict subset of
> > functionalities that webhdfs / swebhdfs offer. Notably, webhdfs /
> swebhdfs
> > support writes and HA which hftp / hsftp do not support. It's more
> natural
> > to move forward with webhdfs / swebhdfs, keeping both hftp / hsftp around
> > seems introducing more work.
> >
> > Another reason is that webhdfs has been supported since Hadoop 1, thus
> > getting rid of hftp / hsftp does not seem removing any features, even the
> > users are trying to migrate from Hadoop 1 to Hadoop 2.
> >
> >
> > Your ideas are appreciated.
> >
> > Thanks,
> > Haohui
> >
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--
Have a Nice Day!
Lohit