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https://issues.apache.org/jira/browse/HDFS-3178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13246731#comment-13246731
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Todd Lipcon commented on HDFS-3178:
-----------------------------------
Hi Nicholas. Could you please add some javadoc to the state enum values
explaining the purpose of each state, and what the transitions are between
them? Or augment the design doc for HDFS-3092 with this state machine, and
reference it from the code?
> Add states for journal synchronization in journal daemon
> --------------------------------------------------------
>
> Key: HDFS-3178
> URL: https://issues.apache.org/jira/browse/HDFS-3178
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h3178_20120403_svn_mv.patch, h3178_20120404.patch,
> h3178_20120404_svn_mv.patch, svn_mv.sh
>
>
> Journal in a new daemon has to be synchronized to the current transaction.
> It requires new states such as WaitingForRoll, Syncing and Synced.
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