-- Philip

[130]air::~(166= 03)$grep -C 3 hadoop.tmp.dir /home/philip/hadoop/hadoop-0.20.2+737/src/mapr= ed/mapred-default.xml

=A0=A0<name>mapred.local.dir</name>

=A0=A0<value&g= t;${hadoop.tmp.dir}/mapred/local</value>

=A0=A0<descript= ion>The local directory where MapReduce stores intermediate

= =A0=A0data files. =A0May be a comma-separated list of

=A0=A0directories on different devices in order to spread disk i/o.

=A0=A0<na= me>mapred.system.dir</name>

=A0=A0<value>${hadoop.= tmp.dir}/mapred/system</value>

=A0=A0<description>The directory where MapReduce stores control = files.

=A0=A0</description>

</property>

=A0=A0<name>mapreduc= e.jobtracker.staging.root.dir</name>

=A0=A0<value>${hadoop.tmp.dir}/mapred/staging</value>

=A0=A0<description>The root of the staging area for users' = job files

=A0=A0In practice, this should be the directory where u= sers' home=A0

=A0=A0directories are located (usually /user)

<= br>

=A0=A0<name>mapred.temp.dir&= lt;/name>

=A0=A0<value>${hadoop.tmp.dir}/mapred/temp<= /value>

=A0=A0<description>A shared directory for temporary files.

=A0=A0</description>

</property>

<= /div>

On Wed, Dec 8, 2010 at 5:03 = PM, Aaron Eng <ae= ng@maprtech.com> wrote:

hadoop.tmp.dir is supposed a location the l= ocal file system, not a directory within HDFS.

That value should als= o be in core-site.xml instead of hdfs-site.xml.=A0 That might be the cause = of your issue.
On Wed, Dec 8, 2010 at 4:47 PM, Hiller, Dean (Contractor) <dean.= hiller@broadridge.com> wrote:
I have this setting in hdfs-site.xml
=A0
<= p class=3D"MsoNormal"><property>
=A0 <na= me>hadoop.tmp.dir</name>

=A0 <value>/opt/data/hadooptmp</value>
</property>
=A0
This then causes a creation of that dir in HDFS(ie.= I can see it when browsing

=A0
http://206.88.43.4:50075/browseDirectory.jsp?namenodeInfoPor= t=3D50070&dir=3D/

=A0
Is it me, or is that w= eird/odd?=A0 Do I have some kind of other setting wrong?=A0 Is hadoop.tmp.d= ir not for local file system like I thought it was(ie. The next property I = have after that is stored on the local filesystem..

=A0
<property>
=A0 <name>dfs.data.dir</name>
=A0 <value>/opt/data/hadoop</value>
</property>
=A0
T= hanks,
Dean
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