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https://issues.apache.org/jira/browse/HBASE-5325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199534#comment-13199534
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stack commented on HBASE-5325:
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bq. Similar to the Namenode and Jobtracker, it would be good if the hbase
master could expose some information through mbeans.
Can we go further (smile)?
Would be cool if when a regionserver registered, master started listening (or
asking) regionservers for their metrics via jmx. Master could use the
collected info when it displays its UI (Perhaps it would make sense to do a
cluster federated mbean that has the sum of all regionserver jmx metrics and
use this displaying master ui (?) plus a master mbean with the master's
vitals). If we got this working, using jmx to query vitals, perhaps we could
undo the rpc that the regionserver does to the master every second or so to
tell it about its current load since HServerLoad is essentially duplicating
metrics (Static or near-static properties that HServerLoad reports such as
loaded coprocessors could be hoisted up as data in the regionservers ephemeral
znode as protobufs/json data -- we could add to whats in HServerLoad reporting
system vitals too like RAM, CPUs, Disks. Master could do the same hoisting
vitals up into its zk znode... and/or emit in an mbean).
> Expose basic information about the master-status through jmx beans
> -------------------------------------------------------------------
>
> Key: HBASE-5325
> URL: https://issues.apache.org/jira/browse/HBASE-5325
> Project: HBase
> Issue Type: Bug
> Reporter: Hitesh Shah
> Priority: Minor
> Attachments: HBASE-5325.wip.patch
>
>
> Similar to the Namenode and Jobtracker, it would be good if the hbase master
> could expose some information through mbeans.
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