hadoop-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ivan Tretyakov <itretya...@griddynamics.com>
Subject Re: Backup NameNode metadata in HA configuration
Date Mon, 03 Feb 2014 21:32:33 GMT
Does anybody can comment 'copying NN metadata directory' vs 'hdfs dfsadmin
-fetch', using NN HA configuration?


On Fri, Jan 31, 2014 at 8:26 PM, Ivan Tretyakov <itretyakov@griddynamics.com
> wrote:

> Hi!
>
> We are using following version of Hadoop software: 2.0.0-cdh4.1.1.
>
> HDFS HA configuration is applied.
>
> I would like to ask if there are any difference or possible side effects
> of backing up namenode data directory.
>
> It is ok to just copy NN data directory from active NN to another host,
> what about standby NN?
> Or it may NN metadate can be in inconsistent state?
> Is there any advantages of using "hdfs dfsadmin -fetch <file>" command?
>
> --
> Best Regards
> Ivan Tretyakov
>
> Deployment Engineer
> Grid Dynamics
> +7 812 640 38 76
> Skype: ivan.v.tretyakov
> www.griddynamics.com
> itretyakov@griddynamics.com
>



-- 
Best Regards
Ivan Tretyakov

Deployment Engineer
Grid Dynamics
+7 812 640 38 76
Skype: ivan.v.tretyakov
www.griddynamics.com
itretyakov@griddynamics.com

Mime
View raw message