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Date: Tue, 29 Jul 2014 13:33:52 +0530
Message-ID: 
 <CAORpBsjmRXTg2uMLkBdz9OoKq2R4Fjjn70kZnuVMER_vGrktBQ@mail.gmail.com>
Subject: Re: Which replication value will be used
From: Nitin Pawar <nitinpawar432@gmail.com>
To: user@hadoop.apache.org, satyam.singh@ericsson.com
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first it will check if you have set replication factor in your write call
.. if yes .. it will be respected.
if there is no value for replication in write process, it falls back to
default value in hdfs-site.xml


On Tue, Jul 29, 2014 at 1:25 PM, Satyam Singh <satyam.singh@ericsson.com>
wrote:

> Hello,
>
>
>
> I have given dfs.replication=2 in hdfs-site.xml as:
> <property>
>     <name>dfs.replication</name>
>     <value>2</value>
> </property>
>
> Also, In my application i have used api for wrting in hdfs:
> public FSDataOutputStream create(Path f,
>                                             boolean overwrite,
>                                             int bufferSize,
>                                             short replication,
>                                             long blockSize,
>                                             Progressable progress
>                                             ) throws IOException {
>     return this.create(f, FsPermission.getFileDefault().applyUMask(
>         FsPermission.getUMask(getConf())), overwrite, bufferSize,
>         replication, blockSize, progress);
>   }
>
> here i also given replication as fourth parameter.
>
> So my question is which replication value will be used that we have given
> in api or in hdfs-site.xml
>
>
> Warm Regards,
> Satyam
>



-- 
Nitin Pawar

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<div dir=3D"ltr">first it will check if you have set replication factor in =
your write call .. if yes .. it will be respected.=C2=A0<div>if there is no=
 value for replication in write process, it falls back to default value in =
hdfs-site.xml=C2=A0</div>
</div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Tue,=
 Jul 29, 2014 at 1:25 PM, Satyam Singh <span dir=3D"ltr">&lt;<a href=3D"mai=
lto:satyam.singh@ericsson.com" target=3D"_blank">satyam.singh@ericsson.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">Hello,<br>
<br>
<br>
<br>
I have given dfs.replication=3D2 in hdfs-site.xml as:<br>
&lt;property&gt;<br>
=C2=A0 =C2=A0 &lt;name&gt;dfs.replication&lt;/name&gt;<br>
=C2=A0 =C2=A0 &lt;value&gt;2&lt;/value&gt;<br>
&lt;/property&gt;<br>
<br>
Also, In my application i have used api for wrting in hdfs:<br>
public FSDataOutputStream create(Path f,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 boolean overwrite,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 int bufferSize,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 short replication,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 long blockSize,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 Progressable progress<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 ) throws IOException {<br>
=C2=A0 =C2=A0 return this.create(f, FsPermission.getFileDefault().<u></u>ap=
plyUMask(<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 FsPermission.getUMask(getConf(<u></u>))), overw=
rite, bufferSize,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 replication, blockSize, progress);<br>
=C2=A0 }<br>
<br>
here i also given replication as fourth parameter.<br>
<br>
So my question is which replication value will be used that we have given i=
n api or in hdfs-site.xml<br>
<br>
<br>
Warm Regards,<br>
Satyam<br>
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>Nitin Pawar<=
br>
</div>

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