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Date: Fri, 18 Jul 2014 22:37:29 +0530
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Subject: Re: MR JOB
From: Ashish Dobhal <dobhalashish772@gmail.com>
To: user@hadoop.apache.org
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Rich Haase Thanks,
But if the copy ops do not occur as a MR job then how does the splitting of
a file into several blocks takes place.


On Fri, Jul 18, 2014 at 10:24 PM, Rich Haase <rdhaase@gmail.com> wrote:

> File copy operations do not run as map reduce jobs.  All hadoop fs
> commands are run as operations against HDFS and do not use the MapReduce.
>
>
> On Fri, Jul 18, 2014 at 10:49 AM, Ashish Dobhal <dobhalashish772@gmail.com
> > wrote:
>
>> Does the normal operations of hadoop such as uploading and downloading a
>> file into the HDFS run as a MR job.
>> If so why cant I see the job being run on my task tracker and job tracker.
>> Thank you.
>>
>
>
>
> --
> *Kernighan's Law*
> "Debugging is twice as hard as writing the code in the first place.
> Therefore, if you write the code as cleverly as possible, you are, by
> definition, not smart enough to debug it."
>

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<div dir=3D"ltr">Rich Haase Thanks,<div>But if the copy ops do not occur as=
 a MR job then how does the splitting of a file into several blocks takes p=
lace.</div></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quo=
te">
On Fri, Jul 18, 2014 at 10:24 PM, Rich Haase <span dir=3D"ltr">&lt;<a href=
=3D"mailto:rdhaase@gmail.com" target=3D"_blank">rdhaase@gmail.com</a>&gt;</=
span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8e=
x;border-left:1px #ccc solid;padding-left:1ex">
<div dir=3D"ltr">File copy operations do not run as map reduce jobs. =C2=A0=
All hadoop fs commands are run as operations against HDFS and do not use th=
e MapReduce.</div><div class=3D"gmail_extra"><div><div class=3D"h5"><br><br=
><div class=3D"gmail_quote">
On Fri, Jul 18, 2014 at 10:49 AM, Ashish Dobhal <span dir=3D"ltr">&lt;<a hr=
ef=3D"mailto:dobhalashish772@gmail.com" target=3D"_blank">dobhalashish772@g=
mail.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr">Does the normal operations =
of hadoop such as uploading and downloading a file into the HDFS run as a M=
R job.<div>

If so why cant I see the job being run on my task tracker and job tracker.<=
/div><div>Thank you.=C2=A0</div>
</div>
</blockquote></div><br><br clear=3D"all"><div><br></div></div></div><span c=
lass=3D"HOEnZb"><font color=3D"#888888">-- <br><b>Kernighan&#39;s Law</b><b=
r>&quot;Debugging is twice as hard as writing the code in the first place.=
=C2=A0 Therefore, if you write the code as cleverly as possible, you are, b=
y definition, not smart enough to debug it.&quot;<br>


</font></span></div>
</blockquote></div><br></div>

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