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From Jian Fang <jian.fang.subscr...@gmail.com>
Subject Re: hftp in Hadoop 0.20.2
Date Fri, 10 Aug 2012 03:59:39 GMT
Thanks Harsh. But there is no firewall there, the two clusters are on the
same networks. I cannot telnet to the port even on the same machine.

On Thu, Aug 9, 2012 at 6:00 PM, Harsh J <harsh@cloudera.com> wrote:

> Hi Jian,
>
> HFTP is always-on by default. Can you check and make sure that the
> firewall isn't the cause of the connection refused on port 50070 on
> the NN and ports 50075 on the DNs here?
>
> On Fri, Aug 10, 2012 at 1:47 AM, Jian Fang
> <jian.fang.subscribe@gmail.com> wrote:
> > Hi,
> >
> > We have a hadoop cluster of version 0.20.2 in production. Now we have
> > another new Hadoop cluster using cloudera's CDH3U4. We like to run
> distcp to
> > copy files between the two clusters. Since the hadoop versions are
> > different, we have to use hftp protocol to copy files based on the hadoop
> > document here:
> > http://hadoop.apache.org/common/docs/r0.20.2/distcp.html#cpver.
> >
> > The problem is that I cannot access files via hftp from the current
> > production 0.20.2 cluster even though I can see the following setting
> from
> > job tracker UI.
> >
> > dfs.http.address pnjhadoopnn01:50070
> >
> > I tried to telnet this port, but got "connection refused" error. Seems
> the
> > hftp service is not actually running. Could someone tell me how to enable
> > the hftp service in the 0.20.2 hadoop cluster so that I can run distcp?
> >
> > Thanks in advance,
> >
> > John
>
>
>
> --
> Harsh J
>

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