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From Doopah Shaf <doopha.s...@gmail.com>
Subject Re: hadoop job progress going back
Date Sun, 27 Dec 2009 10:24:07 GMT
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, <lamfeeling2@gmail.com> wrote:

> Task failed?
>
> ---- 原始信息 ----
> 发自: Doopah Shaf <doopha.shaf@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
>

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