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https://issues.apache.org/jira/browse/HDFS-13286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16449263#comment-16449263
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Ajay Kumar commented on HDFS-13286:
-----------------------------------
[~csun], thanks for working on this. Few minor nits:
* HAAdmin#transitionToObserver L237 doesn't print error message. Seems
checkSupportObserver was added to check if target supports Observer and print
error message but its not used currently.
* rename checkManualStateManagementOK to something like
isManualStateChangeAllowed?
* Update HAAdmin L75 help msg to "Transitions the service to Observer state."
> Add haadmin commands to transition between standby and observer
> ---------------------------------------------------------------
>
> Key: HDFS-13286
> URL: https://issues.apache.org/jira/browse/HDFS-13286
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Chao Sun
> Assignee: Chao Sun
> Priority: Major
> Attachments: HDFS-13286-HDFS-12943.000.patch
>
>
> As discussed in HDFS-12975, we should allow explicit transition between
> standby and observer through haadmin command, such as:
> {code}
> haadmin -transitionToObserver
> {code}
> Initially we should support transition from observer to standby, and standby
> to observer.
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