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Date: Thu, 29 Aug 2013 13:50:37 -0700
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Subject: Re: copy files from hdfs to local fs
From: Chengi Liu <chengi.liu.86@gmail.com>
To: user@hadoop.apache.org
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tail will work as well.. ??? but i want to extract just (say) n lines out
of this file?


On Thu, Aug 29, 2013 at 1:43 PM, Kim Chew <kchew534@gmail.com> wrote:

> hadoop fs -copyToLocal
> or
> hadoop fs -get
>
> It copies the whole file and won't be able just to copy part of the file,
> what is interesting is there is a "tail" command but no "head".
>
> Kim
>
>
> On Thu, Aug 29, 2013 at 1:35 PM, Chengi Liu <chengi.liu.86@gmail.com>wrote:
>
>> Ok,
>>
>>   A very stupid question...
>>
>> I have a large file in
>>
>>     /user/input/foo.txt
>>
>> I want to copy first 100 lines from this location to local filesystem...
>>
>> And the data is very sensitive so i am bit hesistant to experiment.
>>
>> What is the right way to copy sample data from hdfs to local fs.
>>
>>
>

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<div dir=3D"ltr">tail will work as well.. ??? but i want to extract just (s=
ay) n lines out of this file?</div><div class=3D"gmail_extra"><br><br><div =
class=3D"gmail_quote">On Thu, Aug 29, 2013 at 1:43 PM, Kim Chew <span dir=
=3D"ltr">&lt;<a href=3D"mailto:kchew534@gmail.com" target=3D"_blank">kchew5=
34@gmail.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"><div><div><div><div>hadoop =
fs -copyToLocal<br></div>or<br></div>hadoop fs -get<br><br></div>It copies =
the whole file and won&#39;t be able just to copy part of the file, what is=
 interesting is there is a &quot;tail&quot; command but no &quot;head&quot;=
.<span class=3D"HOEnZb"><font color=3D"#888888"><br>

<br></font></span></div><span class=3D"HOEnZb"><font color=3D"#888888">Kim<=
br></font></span></div><div class=3D"HOEnZb"><div class=3D"h5"><div class=
=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Thu, Aug 29, 2013 at=
 1:35 PM, Chengi Liu <span dir=3D"ltr">&lt;<a href=3D"mailto:chengi.liu.86@=
gmail.com" target=3D"_blank">chengi.liu.86@gmail.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"><div>Ok,</div><div><br></di=
v><div>=A0 A very stupid question...</div><div><br></div><div>I have a larg=
e file in=A0</div>

<div><br></div><div>=A0 =A0 /user/input/foo.txt</div><div><br></div><div>I =
want to copy first 100 lines from this location to local filesystem...</div=
>
<div><br></div><div>And the data is very sensitive so i am bit hesistant to=
 experiment.</div><div><br></div><div>What is the right way to copy sample =
data from hdfs to local fs.</div><div><br></div></div>
</blockquote></div><br></div>
</div></div></blockquote></div><br></div>

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