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From "Rong-en Fan" <gra...@gmail.com>
Subject Re: slow copy makes reduce hang
Date Fri, 19 Sep 2008 01:42:27 GMT
Reply to myself. I'm using streaming and the task timeout was set to 0,
so that's why.

On Fri, Sep 19, 2008 at 3:34 AM, Rong-en Fan <grafan@gmail.com> wrote:
> Hi,
> I'm using and see a reduce hang in shuffle phase due
> to a unresponsive node. From the reduce log (sorry that I didn't
> keep it around), it stuck in copying map output from a dead
> node (I can not ssh to that one). At that point, all maps are already
> finished. I'm wondering why this slowness does not trigger a reduce
> task fail and the corresponding map failed (even if it is finished) then
> redo the map task on  another node so that the reduce can work.
> Thanks,
> Rong-En Fan

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