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Subject: namenode is failing
From: Mohit Vadhera <project.linux.proj@gmail.com>
To: "<user@hadoop.apache.org>" <user@hadoop.apache.org>
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Hi Guys,

Namenode switches into safemode when it has low disk space on the root fs /
i have to manually run a command to leave it
I have space on other partition. Can I change the path for cache files on
other partition ? I have below properties . Can it resolve the issue ? If i
change the path to other directories and restart services I get the below
error while starting the service namenode. I didn't find anything in logs
so far.  Can you please suggest something ?

  <property>
     <name>hadoop.tmp.dir</name>
     <value>/var/lib/hadoop-hdfs/cache/${user.name}</value>
  </property>
  <property>
     <name>dfs.namenode.name.dir</name>
     <value>/var/lib/hadoop-hdfs/cache/${user.name}/dfs/name</value>
  </property>
  <property>
     <name>dfs.namenode.checkpoint.dir</name>
     <value>/var/lib/hadoop-hdfs/cache/${user.name
}/dfs/namesecondary</value>
  </property>
  <property>


Service namenode is failing

# for service in /etc/init.d/hadoop-hdfs-* ; do sudo $service status; done
Hadoop datanode is running                                 [  OK  ]
Hadoop namenode is dead and pid file exists                [FAILED]
Hadoop secondarynamenode is running                        [  OK  ]

Thanks,

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<div dir=3D"ltr">Hi Guys,<div><br></div><div><span style=3D"font-family:ari=
al,sans-serif;font-size:13px">Namenode switches into safemode when it has l=
ow disk space on the root fs / i have to manually run a command to leave it=
=A0</span><div>
I have space on other partition. Can I change the path for cache files on o=
ther partition ? I have below properties . Can it resolve the issue ? If i =
change the path to other directories and restart services I get the below e=
rror while starting the service namenode. I didn&#39;t find anything in log=
s so far. =A0Can you please suggest something ?</div>
<div><br></div><div><div>=A0 &lt;property&gt;</div><div>=A0 =A0 =A0&lt;name=
&gt;hadoop.tmp.dir&lt;/name&gt;</div><div>=A0 =A0 =A0&lt;value&gt;/var/lib/=
hadoop-hdfs/cache/${<a href=3D"http://user.name">user.name</a>}&lt;/value&g=
t;</div><div>
=A0 &lt;/property&gt;</div><div>=A0 &lt;property&gt;</div><div>=A0 =A0 =A0&=
lt;name&gt;dfs.namenode.name.dir&lt;/name&gt;</div><div>=A0 =A0 =A0&lt;valu=
e&gt;/var/lib/hadoop-hdfs/cache/${<a href=3D"http://user.name">user.name</a=
>}/dfs/name&lt;/value&gt;</div>
<div>=A0 &lt;/property&gt;</div><div>=A0 &lt;property&gt;</div><div>=A0 =A0=
 =A0&lt;name&gt;dfs.namenode.checkpoint.dir&lt;/name&gt;</div><div>=A0 =A0 =
=A0&lt;value&gt;/var/lib/hadoop-hdfs/cache/${<a href=3D"http://user.name">u=
ser.name</a>}/dfs/namesecondary&lt;/value&gt;</div>
<div>=A0 &lt;/property&gt;</div><div>=A0 &lt;property&gt;</div><div><br></d=
iv><div><br></div><div>Service namenode is failing=A0</div><div><br></div><=
div><div># for service in /etc/init.d/hadoop-hdfs-* ; do sudo $service stat=
us; done</div>
<div>Hadoop datanode is running =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 =A0 =A0 =A0 =A0 [ =A0OK =A0]</div><div>Hadoop namenode is dead and pid=
 file exists =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0[FAILED]</div><div>Hadoop secon=
darynamenode is running =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0[ =
=A0OK =A0]</div>
</div></div><div><br></div><div>Thanks,</div><div><br></div></div></div>

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