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Posted to hdfs-issues@hadoop.apache.org by "Jing Zhao (JIRA)" <ji...@apache.org> on 2014/02/03 20:59:06 UTC
[jira] [Commented] (HDFS-5869) When rolling upgrade is in progress,
NN should only create checkpoint right before the upgrade marker
[ https://issues.apache.org/jira/browse/HDFS-5869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13889839#comment-13889839 ]
Jing Zhao commented on HDFS-5869:
---------------------------------
So do we also want to disable the checkpoint in the standby NN?
> When rolling upgrade is in progress, NN should only create checkpoint right before the upgrade marker
> -----------------------------------------------------------------------------------------------------
>
> Key: HDFS-5869
> URL: https://issues.apache.org/jira/browse/HDFS-5869
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h5869_20140204.patch
>
>
> - When starting rolling upgrade, NN should create a checkpoint before it writes the upgrade marker edit log transaction.
> - When rolling upgrade is in progress, NN should reject saveNamespace rpc calls. Further, if NN restarts, it should create a checkpoint only right before the upgrade marker.
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