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From: Zhe Li <allenlee.lz@gmail.com>
Date: Sun, 26 Apr 2015 16:02:19 +0800
Message-ID: 
 <CAFy9_zsz2XSzfKU9BiCJR87SPESJA7C3uCNEoP4HHe3NQAxqVg@mail.gmail.com>
Subject: Re: Is there any way to limit the concurrent running mappers per job?
To: user@hadoop.apache.org
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Great, thanks you guys.

On Fri, Apr 24, 2015 at 12:07 PM, Naganarasimha G R (Naga) <
garlanaganarasimha@huawei.com> wrote:

> Thanks for the info Harsh,
> MAPREDUCE-5583 also states the scenario where this configuration would be
> useful !
>
> +Naga
> ________________________________________
> From: Harsh J [harsh@cloudera.com]
> Sent: Thursday, April 23, 2015 11:24
> To: <user@hadoop.apache.org>
> Subject: Re: Is there any way to limit the concurrent running mappers per
> job?
>
> This has been introduced as a 2.7.0 feature, see MAPREDUCE-5583.
>
> On Tue, Apr 21, 2015 at 4:32 AM, Zhe Li <allenlee.lz@gmail.com> wrote:
> > Hi, after upgraded to Hadoop 2 (yarn), I found that
> > 'mapred.jobtracker.taskScheduler.maxRunningTasksPerJob' no longer worked,
> > right?
> >
> > One workaround is to use queue to limit it, but it's not easy to control
> it
> > from job submitter.
> > Is there any way to limit the concurrent running mappers per job?
> > Any documents or discussions before?
> >
> > BTW, any way to search this mailing list before I post a new question?
> >
> > Thanks very much.
>
>
>
> --
> Harsh J
>

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<div dir=3D"ltr">Great, thanks you guys.</div><div class=3D"gmail_extra"><b=
r><div class=3D"gmail_quote">On Fri, Apr 24, 2015 at 12:07 PM, Naganarasimh=
a G R (Naga) <span dir=3D"ltr">&lt;<a href=3D"mailto:garlanaganarasimha@hua=
wei.com" target=3D"_blank">garlanaganarasimha@huawei.com</a>&gt;</span> wro=
te:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-=
left:1px #ccc solid;padding-left:1ex">Thanks for the info Harsh,<br>
MAPREDUCE-5583 also states the scenario where this configuration would be u=
seful !<br>
<br>
+Naga<br>
________________________________________<br>
From: Harsh J [<a href=3D"mailto:harsh@cloudera.com">harsh@cloudera.com</a>=
]<br>
Sent: Thursday, April 23, 2015 11:24<br>
To: &lt;<a href=3D"mailto:user@hadoop.apache.org">user@hadoop.apache.org</a=
>&gt;<br>
Subject: Re: Is there any way to limit the concurrent running mappers per j=
ob?<br>
<div class=3D"HOEnZb"><div class=3D"h5"><br>
This has been introduced as a 2.7.0 feature, see MAPREDUCE-5583.<br>
<br>
On Tue, Apr 21, 2015 at 4:32 AM, Zhe Li &lt;<a href=3D"mailto:allenlee.lz@g=
mail.com">allenlee.lz@gmail.com</a>&gt; wrote:<br>
&gt; Hi, after upgraded to Hadoop 2 (yarn), I found that<br>
&gt; &#39;mapred.jobtracker.taskScheduler.maxRunningTasksPerJob&#39; no lon=
ger worked,<br>
&gt; right?<br>
&gt;<br>
&gt; One workaround is to use queue to limit it, but it&#39;s not easy to c=
ontrol it<br>
&gt; from job submitter.<br>
&gt; Is there any way to limit the concurrent running mappers per job?<br>
&gt; Any documents or discussions before?<br>
&gt;<br>
&gt; BTW, any way to search this mailing list before I post a new question?=
<br>
&gt;<br>
&gt; Thanks very much.<br>
<br>
<br>
<br>
--<br>
Harsh J<br>
</div></div></blockquote></div><br></div>

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