[ 
https://issues.apache.org/jira/browse/HDFS-2291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13179877#comment-13179877
 ] 

Aaron T. Myers commented on HDFS-2291:
--------------------------------------

bq. Yes and no... I sort of see your point. But, people have also discussed an 
external tool which would perform checkpoints for many clusters and then upload 
them

I'm still a little leery of this behavior, but I don't feel strongly about it, 
so let's just roll with it.

I should have said this earlier, but I'd also recommend changing 
"prepareEnterState" to "prepareToEnterState", and likewise for exit.

Otherwise the patch looks good to me. +1 once that's addressed.
                
> HA: Checkpointing in an HA setup
> --------------------------------
>
>                 Key: HDFS-2291
>                 URL: https://issues.apache.org/jira/browse/HDFS-2291
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Aaron T. Myers
>            Assignee: Todd Lipcon
>             Fix For: HA branch (HDFS-1623)
>
>         Attachments: hdfs-2291.txt, hdfs-2291.txt, hdfs-2291.txt
>
>
> We obviously need to create checkpoints when HA is enabled. One thought is to 
> use a third, dedicated checkpointing node in addition to the active and 
> standby nodes. Another option would be to make the standby capable of also 
> performing the function of checkpointing.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: 
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Reply via email to