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https://issues.apache.org/jira/browse/HBASE-21521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-21521:
-----------------------------------
Description:
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.
was:
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.
(Example: [^HDFS-4249-2.png)]
Filing this for branch-1. Need to check what if anything is available or
improved in branch-2 and master.
> 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 Purtell
> 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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