周梦想 2012-12-20, 09:48
Mohammad Tariq 2012-12-20, 10:08
Mohammad Tariq 2012-12-20, 10:24
-Re: why not hadoop backup name node data to local disk daily or hourly?
Harsh J 2012-12-20, 10:34
On Thu, Dec 20, 2012 at 3:54 PM, Mohammad Tariq <[EMAIL PROTECTED]> wrote:
> I am sorry Andy, I forgot one important point.
> The Secondary NameNode has been deprecated now, so consider using the
> Checkpoint Node or Backup Node. Checkpoint Node is the process which is
> actually responsible for creating periodic check points. It downloads
> fsimage and log edits from the active NameNode, merges them locally, and
> uploads the new image back to the active NameNode.
This isn't true anymore. We are continuing to keep the SNN and have
undeprecated it. See https://issues.apache.org/jira/browse/HDFS-2397.
We are perhaps deprecating the CheckpointNode though:
Mohammad Tariq 2012-12-20, 10:43
Harsh J 2012-12-20, 10:06
Nitin Pawar 2012-12-24, 10:51
周梦想 2012-12-24, 10:54