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From Harsh J <ha...@cloudera.com>
Subject Re: hftp in Hadoop 0.20.2
Date Fri, 10 Aug 2012 05:50:11 GMT
Jian,

>From your NN, can you get us the output "netstat -anp | grep 50070"?

On Fri, Aug 10, 2012 at 9:29 AM, Jian Fang
<jian.fang.subscribe@gmail.com> wrote:
> 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
>
>



-- 
Harsh J

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