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Posted to user@hadoop.apache.org by oualid ait wafli <ou...@gmail.com> on 2013/03/20 12:59:24 UTC
format NameNode after reboot
Hi,
I was using Hadoop 1.0.4 in a single-node mode and everything was working
fine.But then I had to restart my computer because of some reason.And now
when I am trying to start Namenode and Datanode I can find only Datanode
running.Could anyone tell me the possible reason of this problem??Or am I
doing something wrong?? I tried both bin/start-all.sh and bin/start-dfs.sh.
. Many thanks in advance
Re: format NameNode after reboot
Posted by oualid ait wafli <ou...@gmail.com>.
hank you Mohammed
I'll restart my computer and try to start NameNode whithout format it
2013/3/20 Mohammad Tariq <do...@gmail.com>
> Have you added these properties in your hdfs-site.xml file :
> <property>
> <name>dfs.name.dir</name>
> <value>/hadoop/hdfs/name</value>
> </property>
> <property>
> <name>dfs.data.dir</name>
> <value>/hadoop/hdfs/data</value>
> </property>
> <property>
>
> If not please do that. The values of these properties default to the /tmp
> directory which gets emptied at each reboot and you end up loosing your
> data and metadata.
>
> HTH
>
> Warm Regards,
> Tariq
> https://mtariq.jux.com/
> cloudfront.blogspot.com
>
>
> On Wed, Mar 20, 2013 at 5:29 PM, oualid ait wafli <
> oualid.aitwafli@gmail.com> wrote:
>
>> Hi,
>>
>> I was using Hadoop 1.0.4 in a single-node mode and everything was working
>> fine.But then I had to restart my computer because of some reason.And now
>> when I am trying to start Namenode and Datanode I can find only Datanode
>> running.Could anyone tell me the possible reason of this problem??Or am I
>> doing something wrong?? I tried both bin/start-all.sh and bin/start-dfs.sh.
>>
>> . Many thanks in advance
>>
>
>
Re: format NameNode after reboot
Posted by oualid ait wafli <ou...@gmail.com>.
hank you Mohammed
I'll restart my computer and try to start NameNode whithout format it
2013/3/20 Mohammad Tariq <do...@gmail.com>
> Have you added these properties in your hdfs-site.xml file :
> <property>
> <name>dfs.name.dir</name>
> <value>/hadoop/hdfs/name</value>
> </property>
> <property>
> <name>dfs.data.dir</name>
> <value>/hadoop/hdfs/data</value>
> </property>
> <property>
>
> If not please do that. The values of these properties default to the /tmp
> directory which gets emptied at each reboot and you end up loosing your
> data and metadata.
>
> HTH
>
> Warm Regards,
> Tariq
> https://mtariq.jux.com/
> cloudfront.blogspot.com
>
>
> On Wed, Mar 20, 2013 at 5:29 PM, oualid ait wafli <
> oualid.aitwafli@gmail.com> wrote:
>
>> Hi,
>>
>> I was using Hadoop 1.0.4 in a single-node mode and everything was working
>> fine.But then I had to restart my computer because of some reason.And now
>> when I am trying to start Namenode and Datanode I can find only Datanode
>> running.Could anyone tell me the possible reason of this problem??Or am I
>> doing something wrong?? I tried both bin/start-all.sh and bin/start-dfs.sh.
>>
>> . Many thanks in advance
>>
>
>
Re: format NameNode after reboot
Posted by oualid ait wafli <ou...@gmail.com>.
hank you Mohammed
I'll restart my computer and try to start NameNode whithout format it
2013/3/20 Mohammad Tariq <do...@gmail.com>
> Have you added these properties in your hdfs-site.xml file :
> <property>
> <name>dfs.name.dir</name>
> <value>/hadoop/hdfs/name</value>
> </property>
> <property>
> <name>dfs.data.dir</name>
> <value>/hadoop/hdfs/data</value>
> </property>
> <property>
>
> If not please do that. The values of these properties default to the /tmp
> directory which gets emptied at each reboot and you end up loosing your
> data and metadata.
>
> HTH
>
> Warm Regards,
> Tariq
> https://mtariq.jux.com/
> cloudfront.blogspot.com
>
>
> On Wed, Mar 20, 2013 at 5:29 PM, oualid ait wafli <
> oualid.aitwafli@gmail.com> wrote:
>
>> Hi,
>>
>> I was using Hadoop 1.0.4 in a single-node mode and everything was working
>> fine.But then I had to restart my computer because of some reason.And now
>> when I am trying to start Namenode and Datanode I can find only Datanode
>> running.Could anyone tell me the possible reason of this problem??Or am I
>> doing something wrong?? I tried both bin/start-all.sh and bin/start-dfs.sh.
>>
>> . Many thanks in advance
>>
>
>
Re: format NameNode after reboot
Posted by oualid ait wafli <ou...@gmail.com>.
hank you Mohammed
I'll restart my computer and try to start NameNode whithout format it
2013/3/20 Mohammad Tariq <do...@gmail.com>
> Have you added these properties in your hdfs-site.xml file :
> <property>
> <name>dfs.name.dir</name>
> <value>/hadoop/hdfs/name</value>
> </property>
> <property>
> <name>dfs.data.dir</name>
> <value>/hadoop/hdfs/data</value>
> </property>
> <property>
>
> If not please do that. The values of these properties default to the /tmp
> directory which gets emptied at each reboot and you end up loosing your
> data and metadata.
>
> HTH
>
> Warm Regards,
> Tariq
> https://mtariq.jux.com/
> cloudfront.blogspot.com
>
>
> On Wed, Mar 20, 2013 at 5:29 PM, oualid ait wafli <
> oualid.aitwafli@gmail.com> wrote:
>
>> Hi,
>>
>> I was using Hadoop 1.0.4 in a single-node mode and everything was working
>> fine.But then I had to restart my computer because of some reason.And now
>> when I am trying to start Namenode and Datanode I can find only Datanode
>> running.Could anyone tell me the possible reason of this problem??Or am I
>> doing something wrong?? I tried both bin/start-all.sh and bin/start-dfs.sh.
>>
>> . Many thanks in advance
>>
>
>
Re: format NameNode after reboot
Posted by Mohammad Tariq <do...@gmail.com>.
Have you added these properties in your hdfs-site.xml file :
<property>
<name>dfs.name.dir</name>
<value>/hadoop/hdfs/name</value>
</property>
<property>
<name>dfs.data.dir</name>
<value>/hadoop/hdfs/data</value>
</property>
<property>
If not please do that. The values of these properties default to the /tmp
directory which gets emptied at each reboot and you end up loosing your
data and metadata.
HTH
Warm Regards,
Tariq
https://mtariq.jux.com/
cloudfront.blogspot.com
On Wed, Mar 20, 2013 at 5:29 PM, oualid ait wafli <oualid.aitwafli@gmail.com
> wrote:
> Hi,
>
> I was using Hadoop 1.0.4 in a single-node mode and everything was working
> fine.But then I had to restart my computer because of some reason.And now
> when I am trying to start Namenode and Datanode I can find only Datanode
> running.Could anyone tell me the possible reason of this problem??Or am I
> doing something wrong?? I tried both bin/start-all.sh and bin/start-dfs.sh.
>
> . Many thanks in advance
>
Re: format NameNode after reboot
Posted by Mohammad Tariq <do...@gmail.com>.
Have you added these properties in your hdfs-site.xml file :
<property>
<name>dfs.name.dir</name>
<value>/hadoop/hdfs/name</value>
</property>
<property>
<name>dfs.data.dir</name>
<value>/hadoop/hdfs/data</value>
</property>
<property>
If not please do that. The values of these properties default to the /tmp
directory which gets emptied at each reboot and you end up loosing your
data and metadata.
HTH
Warm Regards,
Tariq
https://mtariq.jux.com/
cloudfront.blogspot.com
On Wed, Mar 20, 2013 at 5:29 PM, oualid ait wafli <oualid.aitwafli@gmail.com
> wrote:
> Hi,
>
> I was using Hadoop 1.0.4 in a single-node mode and everything was working
> fine.But then I had to restart my computer because of some reason.And now
> when I am trying to start Namenode and Datanode I can find only Datanode
> running.Could anyone tell me the possible reason of this problem??Or am I
> doing something wrong?? I tried both bin/start-all.sh and bin/start-dfs.sh.
>
> . Many thanks in advance
>
Re: format NameNode after reboot
Posted by Mohammad Tariq <do...@gmail.com>.
Have you added these properties in your hdfs-site.xml file :
<property>
<name>dfs.name.dir</name>
<value>/hadoop/hdfs/name</value>
</property>
<property>
<name>dfs.data.dir</name>
<value>/hadoop/hdfs/data</value>
</property>
<property>
If not please do that. The values of these properties default to the /tmp
directory which gets emptied at each reboot and you end up loosing your
data and metadata.
HTH
Warm Regards,
Tariq
https://mtariq.jux.com/
cloudfront.blogspot.com
On Wed, Mar 20, 2013 at 5:29 PM, oualid ait wafli <oualid.aitwafli@gmail.com
> wrote:
> Hi,
>
> I was using Hadoop 1.0.4 in a single-node mode and everything was working
> fine.But then I had to restart my computer because of some reason.And now
> when I am trying to start Namenode and Datanode I can find only Datanode
> running.Could anyone tell me the possible reason of this problem??Or am I
> doing something wrong?? I tried both bin/start-all.sh and bin/start-dfs.sh.
>
> . Many thanks in advance
>
Re: format NameNode after reboot
Posted by Mohammad Tariq <do...@gmail.com>.
Have you added these properties in your hdfs-site.xml file :
<property>
<name>dfs.name.dir</name>
<value>/hadoop/hdfs/name</value>
</property>
<property>
<name>dfs.data.dir</name>
<value>/hadoop/hdfs/data</value>
</property>
<property>
If not please do that. The values of these properties default to the /tmp
directory which gets emptied at each reboot and you end up loosing your
data and metadata.
HTH
Warm Regards,
Tariq
https://mtariq.jux.com/
cloudfront.blogspot.com
On Wed, Mar 20, 2013 at 5:29 PM, oualid ait wafli <oualid.aitwafli@gmail.com
> wrote:
> Hi,
>
> I was using Hadoop 1.0.4 in a single-node mode and everything was working
> fine.But then I had to restart my computer because of some reason.And now
> when I am trying to start Namenode and Datanode I can find only Datanode
> running.Could anyone tell me the possible reason of this problem??Or am I
> doing something wrong?? I tried both bin/start-all.sh and bin/start-dfs.sh.
>
> . Many thanks in advance
>