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https://issues.apache.org/jira/browse/HBASE-21521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16939032#comment-16939032
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Michael Stack commented on HBASE-21521:
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Tables on Master is an aborted project. Does not work (not w/o refactor of
master startup sequence).
> Expose master startup status via JMX and web UI
> -----------------------------------------------
>
> Key: HBASE-21521
> URL: https://issues.apache.org/jira/browse/HBASE-21521
> Project: HBase
> Issue Type: Improvement
> Components: master, UI
> Reporter: Andrew Kyle Purtell
> Assignee: Rushabh Shah
> Priority: Major
>
> Add an internal API to the master for tracking startup progress. Expose this
> information via JMX.
> Modify the master to bring the web UI up sooner. Will require tweaks to
> various views to prevent attempts to retrieve state before the master fully
> up (or else expect NPEs). Currently, before the master has fully initialized
> an attempt to use the web UI will return a 500 error code and display an
> error page.
> Finally, update the web UI to display startup progress, like HDFS-4249.
> Filing this for branch-1. Need to check what if anything is available or
> improved in branch-2 and master.
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