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Date: Thu, 9 Aug 2012 22:28:40 +0800
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 <CAPu=L6vJht_HpqLnOXdo08BHgFt3yK++JGZQKiB36WNGqyPMXQ@mail.gmail.com>
Subject: Re: fs.local.block.size vs file.blocksize
From: rahul p <rahulpoolanchalil@gmail.com>
To: user@hadoop.apache.org
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Hi Tariq,
I am trying to start wordcount mapreduce, i am not getting how to start and
where to start ..
i very new to java.
can you help how to work with this..any help will appreciated.


Hi All,
Please help start with Hadoop on CDH , i have instaleed in my local PC.
any help will appreciated.

On Thu, Aug 9, 2012 at 9:10 PM, Ellis H. Wilson III <ellis@cse.psu.edu>wrote:

> Hi all!
>
> Can someone please briefly explain the difference?  I do not see
> deprecated warnings for fs.local.block.size when I run with them set and I
> see two copies of RawLocalFileSystem.java (the other is
> local/RawLocalFs.java).
>
> The things I really need to get answers to are:
> 1. Is the default boosted to 64MB from Hadoop 1.0 to Hadoop 2.0?  I
> believe it is, but want validation on that.
> 2. Which one controls shuffle block-size?
> 3. If I have a single machine non-distributed instance, and point it at
> file://, do both of these control the persistent data's block size or just
> one of them or what?
> 4. Is there any way to run with say a 512MB blocksize for the persistent
> data and the default 64MB blocksize for the shuffled data?
>
> Thanks!
>
> ellis
>

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Hi Tariq,<div>I am trying to start wordcount mapreduce, i am not getting ho=
w to start and where to start ..</div><div>i very new to java.=A0</div><div=
>can you help how to work with this..any help will appreciated.</div><div>
<br></div><div><br></div><div>Hi All,</div><div>Please help start with Hado=
op on CDH , i have instaleed in my local PC.</div><div>any help will apprec=
iated.<br><br><div class=3D"gmail_quote">On Thu, Aug 9, 2012 at 9:10 PM, El=
lis H. Wilson III <span dir=3D"ltr">&lt;<a href=3D"mailto:ellis@cse.psu.edu=
" target=3D"_blank">ellis@cse.psu.edu</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">
Hi all!<br>
<br>
Can someone please briefly explain the difference? =A0I do not see deprecat=
ed warnings for fs.local.block.size when I run with them set and I see two =
copies of RawLocalFileSystem.java (the other is local/RawLocalFs.java).<br>


<br>
The things I really need to get answers to are:<br>
1. Is the default boosted to 64MB from Hadoop 1.0 to Hadoop 2.0? =A0I belie=
ve it is, but want validation on that.<br>
2. Which one controls shuffle block-size?<br>
3. If I have a single machine non-distributed instance, and point it at fil=
e://, do both of these control the persistent data&#39;s block size or just=
 one of them or what?<br>
4. Is there any way to run with say a 512MB blocksize for the persistent da=
ta and the default 64MB blocksize for the shuffled data?<br>
<br>
Thanks!<span><font color=3D"#888888"><br>
<br>
ellis<br>
</font></span></blockquote></div><br>
</div>

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