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Posted to common-user@hadoop.apache.org by Farhan Husain <fa...@csebuet.org> on 2010/01/05 01:15:14 UTC

Re: hadoop job progress going back

What version are you using?

2009/12/27 Doopah Shaf <do...@gmail.com>

> The web UI doesn't show any failures.
>
> And it does show several reduce tasks with progress = 475.70%... any clues?
>
> On Sun, Dec 27, 2009 at 12:20 PM, <la...@gmail.com> wrote:
>
> > Task failed?
> >
> > ---- 原始信息 ----
> > 发自: Doopah Shaf <do...@gmail.com>
> > 发送时间:
> > 收件人: common-user@hadoop.apache.org
> > 主题: hadoop job progress going back
> >
> > Running jobs sometimes displays progress as follows:
> >
> > map 100% reduce 10%
> >
> > and then
> >
> > map 100% reduce 0%
> >
> > What causes this? Is this speculative execution restarting tasks?
> >
> > Cheers,
> > DS
> >
>