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HDFS >> mail # dev >> Deprecate hftp / hsftp


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Re: Deprecate hftp / hsftp
Hi Adam,

I agree that having some admission controls in webhdfs would be great, and
you can sort of work around it by keeping both hftp and webhdfs around.

However, I think this is irrelevant to whether we should deprecate hftp /
hsftp.

~Haohui
On Tue, Nov 26, 2013 at 2:06 PM, Adam Faris <[EMAIL PROTECTED]> wrote:

> The problem with replacing hftp with WebHDFS is caused by both the
> datanode web interface and the WebHDFS servlet shareing the same jetty
> container.  If I want to prevent downloads via webhdfs to corportate
> workstations, I have to firewall the jetty port.  But firewalling the jetty
> port on the datanode then breaks the HDFS file viewer.   Alternatively I
> could disable WebHDFS but then I no longer am able to transfer data between
> different version hadoop clusters.
>
> I think what's missing from webhdfs is a deny/allow list similar to what
> httpd has.  This would allow the operations teams to configure WebHDFS so
> that file transfers only happen between defined networks, and still allow
> the other jetty servlets to be available as we won't have to firewall the
> jetty port.
>
> I should probably go search through open tickets to see if deny/allow list
> has been requested and if not, open a jira. :)
>
>
>
> On Nov 26, 2013, at 1:40 PM, Suresh Srinivas <[EMAIL PROTECTED]>
> wrote:
>
> > 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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CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to
which it is addressed and may contain information that is confidential,
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of this message is not the intended recipient, you are hereby notified that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
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and delete it from your system. Thank You.