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Posted to mapreduce-user@hadoop.apache.org by ch huang <ju...@gmail.com> on 2014/05/30 08:09:39 UTC

issue about how to decommission a datanode from hadoop cluster

hi,maillist:
                I use CDH4.4 yarn&hdfs cluster  ,i want to decommission a
datanode ,should i modify hdfs-site.xml and mapred-xml of all node in
cluster to exclude the node ,or i just need set hdfs-site.xml and
mapred-xml on NN ?

Re: issue about how to decommission a datanode from hadoop cluster

Posted by Zesheng Wu <wu...@gmail.com>.

I think you just need to set an exclude file on NN, that's enough.


2014-05-30 14:09 GMT+08:00 ch huang <ju...@gmail.com>:

> hi,maillist:
>                 I use CDH4.4 yarn&hdfs cluster  ,i want to decommission a
> datanode ,should i modify hdfs-site.xml and mapred-xml of all node in
> cluster to exclude the node ,or i just need set hdfs-site.xml and
> mapred-xml on NN ?
>



-- 
Best Wishes!

Yours, Zesheng

Re: issue about how to decommission a datanode from hadoop cluster

Posted by Zesheng Wu <wu...@gmail.com>.

I think you just need to set an exclude file on NN, that's enough.


2014-05-30 14:09 GMT+08:00 ch huang <ju...@gmail.com>:

> hi,maillist:
>                 I use CDH4.4 yarn&hdfs cluster  ,i want to decommission a
> datanode ,should i modify hdfs-site.xml and mapred-xml of all node in
> cluster to exclude the node ,or i just need set hdfs-site.xml and
> mapred-xml on NN ?
>



-- 
Best Wishes!

Yours, Zesheng

Re: issue about how to decommission a datanode from hadoop cluster

Posted by Zesheng Wu <wu...@gmail.com>.

I think you just need to set an exclude file on NN, that's enough.


2014-05-30 14:09 GMT+08:00 ch huang <ju...@gmail.com>:

> hi,maillist:
>                 I use CDH4.4 yarn&hdfs cluster  ,i want to decommission a
> datanode ,should i modify hdfs-site.xml and mapred-xml of all node in
> cluster to exclude the node ,or i just need set hdfs-site.xml and
> mapred-xml on NN ?
>



-- 
Best Wishes!

Yours, Zesheng

Re: issue about how to decommission a datanode from hadoop cluster

Posted by Zesheng Wu <wu...@gmail.com>.

I think you just need to set an exclude file on NN, that's enough.


2014-05-30 14:09 GMT+08:00 ch huang <ju...@gmail.com>:

> hi,maillist:
>                 I use CDH4.4 yarn&hdfs cluster  ,i want to decommission a
> datanode ,should i modify hdfs-site.xml and mapred-xml of all node in
> cluster to exclude the node ,or i just need set hdfs-site.xml and
> mapred-xml on NN ?
>



-- 
Best Wishes!

Yours, Zesheng