[jira] [Updated] (HBASE-5325) Expose basic information about the master-status through jmx beans

["Hitesh Shah (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-5325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hitesh Shah updated HBASE-5325:
-------------------------------

    Attachment: HBASE-5325.wip.patch

Attached is a preliminary patch which adds a new hbasemasterinfo bean. Please let me know your comments/thoughts on whether this is the right approach/direction. 

If it looks good, I can add something similar for the region server ( and tests, etc ). 

Using a hacked patch to display the /jmx output, this is what the information would look like: 

{quote}
{
    "name" : "Hadoop:service=HBase,name=HBaseMasterInfo",
    "modelerType" : "org.apache.hadoop.hbase.master.HMasterCommandLine$LocalHMaster",
    "ClusterId" : "d24914d7-75d3-4dcc-9e6f-0d7770833993",
    "ZookeeperQuorumInfo" : "localhost:2181",
    "CoprocessorsInfo" : "[]",
    "MasterStartTime" : 1328223257723,
    "MasterActiveTime" : 1328223257725,
    "RegionServers" : "{\"10.10.10.128:57366\":{\"requestsPerSecond\":0,\"startcode\":1328223257711,\"maxHeapMB\":987,\"numberOfOnlineRegions\":2,\"usedHeapMB\":34}}",
    "DeadRegionServers" : "[]",
    "RegionsInTransition" : "{}"
  }
{quote}


                
> 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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