Re: Reduce stalling

[brainstorm <br...@gmail.com>]

I'm having the same problem :-/ Maps are going fine while reduce phase
stalls on 9-16%, and then resumes after a loong while (30-40 minutes).

I'm using hadoop 0.16.0 (r618351) and wordcount hadoop-example... next
week I'll try with a newer hadoop version (perhaps trunk) to see if I
can reproduce this issue :-S

On Sat, Jun 21, 2008 at 8:28 AM, Arnie Horta <ar...@gmail.com> wrote:
> Hello,
>
>
> I am having a problem...when I configure more than one node on my hadoop
> cluster, the reduce jobs all stall. Ther logs look EXACTLY like the logs
> described by Amit Kumar Singh. in his post last month. I have checked that
> the disk is fine (I formatted the HDFS and deleted all the data on the data
> nodes to make sure) and this is not a firewall issue or a problem with
> etc/hosts. It works fine with one node, but adding a second node starts the
> stalling.
>
>
> I have tried using both .16.2 and .16.4, to no avail.....
>
>
> HELP!
>