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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2291) HA: Checkpointing in an HA setup
Date Sat, 27 Aug 2011 08:21:29 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13092225#comment-13092225
] 

Uma Maheswara Rao G commented on HDFS-2291:
-------------------------------------------

{quote}
One thought is to use a third, dedicated checkpointing node in addition to the active and
standby nodes.
{quote}
  Introducing new nodes may create overheads in setting up the clusters. we can always think
to reduce the cluster complexities to create setups.

{quote}
Another option would be to make the standby capable of also performing the function of checkpointing.
{quote}
IMO , standby can do checkpointing job.

what do you say Aaron?

> 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: name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Aaron T. Myers
>            Assignee: Todd Lipcon
>             Fix For: HA branch (HDFS-1623)
>
>
> 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.

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