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?
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 <[EMAIL PROTECTED] Best Regards Ivan Tretyakov
Thank you Harsh! But I would like to know if just copying NN data directory (dfs.name.dir, dfs.namenode.name.dir) is appropriate or not? On Tue, Feb 4, 2014 at 6:00 AM, Harsh J <[EMAIL PROTECTED]> wrote: Best Regards Ivan Tretyakov
Great! That is what I need to know. I was expecting that fsimage can be in inconsistent state while applying changes and it can be wrong to just copy it in such moments. On Tue, Feb 4, 2014 at 11:42 AM, Harsh J <[EMAIL PROTECTED]> wrote: Best Regards Ivan Tretyakov