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Posted to common-user@hadoop.apache.org by 조주일 <tj...@kgrid.co.kr> on 2014/06/19 11:14:12 UTC

hdfs 2.2 federation

 
ns01 = HA( namenode194-active, namenode195-standby ) 
ns02 = HA( namenode196-active, namenode197-standby ) 
 
I was running on the server command 195
I was running the command(-safemode enter)  namenode194 server 
 
$HADOOP_PREFIX/bin/hdfs dfsadmin -safemode enter 
 
I was expecting to change safemode both namenode194 and namenode195 
 
However, only changes namenode195.
 
What's the problem?

Re: hdfs 2.2 federation

Posted by Stephen Chu <sc...@cloudera.com>.

Hi,

There are some open issues with DFSAdmin.

You can read more at

https://issues.apache.org/jira/browse/HDFS-5147 (Certain dfsadmin commands
such as safemode do not interact with the active namenode in ha setup)
https://issues.apache.org/jira/browse/HDFS-6507 (Improve DFSAdmin to
support HA cluster better)

Thanks,
Stephen



On Thu, Jun 19, 2014 at 2:14 AM, 조주일 <tj...@kgrid.co.kr> wrote:

>
>
> ns01 = HA( namenode194-active, namenode195-standby )
>
> ns02 = HA( namenode196-active, namenode197-standby )
>
>
>
> I was running on the server command 195
>
> I was running the command(-safemode enter)  namenode194 server
>
>
>
> $HADOOP_PREFIX/bin/hdfs dfsadmin -safemode enter
>
>
>
> I was expecting to change safemode both namenode194 and namenode195
>
>
>
> However, only changes namenode195.
>
>
>
> What's the problem?
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

Re: hdfs 2.2 federation

Posted by Stephen Chu <sc...@cloudera.com>.

Hi,

There are some open issues with DFSAdmin.

You can read more at

https://issues.apache.org/jira/browse/HDFS-5147 (Certain dfsadmin commands
such as safemode do not interact with the active namenode in ha setup)
https://issues.apache.org/jira/browse/HDFS-6507 (Improve DFSAdmin to
support HA cluster better)

Thanks,
Stephen



On Thu, Jun 19, 2014 at 2:14 AM, 조주일 <tj...@kgrid.co.kr> wrote:

>
>
> ns01 = HA( namenode194-active, namenode195-standby )
>
> ns02 = HA( namenode196-active, namenode197-standby )
>
>
>
> I was running on the server command 195
>
> I was running the command(-safemode enter)  namenode194 server
>
>
>
> $HADOOP_PREFIX/bin/hdfs dfsadmin -safemode enter
>
>
>
> I was expecting to change safemode both namenode194 and namenode195
>
>
>
> However, only changes namenode195.
>
>
>
> What's the problem?
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

Re: hdfs 2.2 federation

Posted by Stephen Chu <sc...@cloudera.com>.

Hi,

There are some open issues with DFSAdmin.

You can read more at

https://issues.apache.org/jira/browse/HDFS-5147 (Certain dfsadmin commands
such as safemode do not interact with the active namenode in ha setup)
https://issues.apache.org/jira/browse/HDFS-6507 (Improve DFSAdmin to
support HA cluster better)

Thanks,
Stephen



On Thu, Jun 19, 2014 at 2:14 AM, 조주일 <tj...@kgrid.co.kr> wrote:

>
>
> ns01 = HA( namenode194-active, namenode195-standby )
>
> ns02 = HA( namenode196-active, namenode197-standby )
>
>
>
> I was running on the server command 195
>
> I was running the command(-safemode enter)  namenode194 server
>
>
>
> $HADOOP_PREFIX/bin/hdfs dfsadmin -safemode enter
>
>
>
> I was expecting to change safemode both namenode194 and namenode195
>
>
>
> However, only changes namenode195.
>
>
>
> What's the problem?
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

Re: hdfs 2.2 federation

Posted by Stephen Chu <sc...@cloudera.com>.

Hi,

There are some open issues with DFSAdmin.

You can read more at

https://issues.apache.org/jira/browse/HDFS-5147 (Certain dfsadmin commands
such as safemode do not interact with the active namenode in ha setup)
https://issues.apache.org/jira/browse/HDFS-6507 (Improve DFSAdmin to
support HA cluster better)

Thanks,
Stephen



On Thu, Jun 19, 2014 at 2:14 AM, 조주일 <tj...@kgrid.co.kr> wrote:

>
>
> ns01 = HA( namenode194-active, namenode195-standby )
>
> ns02 = HA( namenode196-active, namenode197-standby )
>
>
>
> I was running on the server command 195
>
> I was running the command(-safemode enter)  namenode194 server
>
>
>
> $HADOOP_PREFIX/bin/hdfs dfsadmin -safemode enter
>
>
>
> I was expecting to change safemode both namenode194 and namenode195
>
>
>
> However, only changes namenode195.
>
>
>
> What's the problem?
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>