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https://issues.apache.org/jira/browse/HDFS-5384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer updated HDFS-5384:
-----------------------------------
Labels: BB2015-05-TBR (was: )
> Add a new TransitionState to indicate NN is in transition from standby state
> to active state
> --------------------------------------------------------------------------------------------
>
> Key: HDFS-5384
> URL: https://issues.apache.org/jira/browse/HDFS-5384
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: ha, namenode
> Affects Versions: 3.0.0
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Labels: BB2015-05-TBR
> Attachments: HDFS-5384.000.patch, HDFS-5384.001.patch
>
>
> Currently in HA setup, when a NameNode is transitioning from standby to
> active, the current code first sets the state of the NN to Active, then
> starts the active service, during which the NN still needs to tail the
> remaining editlog and may not be able to serve certain requests as expected
> (such as HDFS-5322).
> So it may be necessary to define a transition state to indicate that NN has
> left the previous state and is in transitioning to the next state.
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