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Date: Tue, 6 Oct 2015 09:26:42 -0400
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 <CAEo-6+RgKKAskpm2wCvfz9_aZhWtJBt_BVNdZuAaEiyxHEONnw@mail.gmail.com>
Subject: Re: Passing Args to Mappers and Reducers
From: Shahab Yunus <shahab.yunus@gmail.com>
To: "user@hadoop.apache.org" <user@hadoop.apache.org>
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Are you properly implementing the Tool interface?
https://hadoopi.wordpress.com/2013/06/05/hadoop-implementing-the-tool-interface-for-mapreduce-driver/

Also, there needs to be space between -D and the param name.

Regards,
Shahab

On Tue, Oct 6, 2015 at 9:22 AM, Istabrak Abdul-Fatah <ifatah@gmail.com>
wrote:

> Greetings to all,
> Is it possible to pass args to Mapper and Reducers via the command line
> args.
> I need to pass some args upon the MapRed job invocation so that I can pass
> these args via the Context object to the Mapper and Reducer code.
> I am currently running Hadoop2.7 and tried to pass some args using the -D
> VM args but it did not succeed.
> Here are some failed code snippets:
>
> ~]$ yarn -Dista="666666" jar /opt/yarn/my_examples/AvgSix.jar
> /user/yarn/input/samplefile.csv output
>
> ~]$ yarn  jar -Dista="666666" /opt/yarn/my_examples/AvgSix.jar
> /user/yarn/input/samplefile.csv output
>
> ~]$ yarn  jar /opt/yarn/my_examples/AvgSix.jar
> /user/yarn/input/samplefile.csv output  -Dista="666666"
>
> Please advise.
>
>
> Thx and BR
>
> Ista
>

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<div dir=3D"ltr">Are you properly implementing the Tool interface?<div><a h=
ref=3D"https://hadoopi.wordpress.com/2013/06/05/hadoop-implementing-the-too=
l-interface-for-mapreduce-driver/">https://hadoopi.wordpress.com/2013/06/05=
/hadoop-implementing-the-tool-interface-for-mapreduce-driver/</a><br></div>=
<div><br></div><div>Also, there needs to be space between -D and the param =
name.</div><div><br></div><div>Regards,</div><div>Shahab</div></div><div cl=
ass=3D"gmail_extra"><br><div class=3D"gmail_quote">On Tue, Oct 6, 2015 at 9=
:22 AM, Istabrak Abdul-Fatah <span dir=3D"ltr">&lt;<a href=3D"mailto:ifatah=
@gmail.com" target=3D"_blank">ifatah@gmail.com</a>&gt;</span> wrote:<br><bl=
ockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #=
ccc solid;padding-left:1ex"><div dir=3D"ltr">Greetings to all,<div>Is it po=
ssible to pass args to Mapper and Reducers via the command line args.</div>=
<div>I need to pass some args upon the MapRed job invocation so that I can =
pass these args via the Context object to the Mapper and Reducer code.</div=
><div>I am currently running Hadoop2.7 and tried to pass some args using th=
e -D VM args but it did not succeed.</div><div>Here are some failed code sn=
ippets:</div><div><br></div><div>~]$ yarn -Dista=3D&quot;666666&quot; jar /=
opt/yarn/my_examples/AvgSix.jar /user/yarn/input/samplefile.csv output<br><=
/div><div><br></div><div>~]$ yarn =C2=A0jar -Dista=3D&quot;666666&quot; /op=
t/yarn/my_examples/AvgSix.jar /user/yarn/input/samplefile.csv output</div><=
div><br></div><div>~]$ yarn =C2=A0jar /opt/yarn/my_examples/AvgSix.jar /use=
r/yarn/input/samplefile.csv output =C2=A0-Dista=3D&quot;666666&quot;=C2=A0<=
br></div><div><br></div><div>Please advise.</div><div><br></div><div><br></=
div><div>Thx and BR</div><div><br></div><div>Ista</div></div>
</blockquote></div><br></div>

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