Which release of HBase do you use ?
I tried on hbase 1.1.0 RC and saw descriptions when ?description=true is
appended to URL.
Here is top of region server JMX :
{
"beans" : [ {
"name" : "java.lang:type=Memory",
"description" : "Information on the management interface of the MBean",
"modelerType" : "sun.management.MemoryImpl",
"ObjectPendingFinalizationCount" : 0,
"NonHeapMemoryUsage" : {
"committed" : 106651648,
"init" : 24313856,
"max" : 224395264,
"used" : 66747672
},
"Verbose" : true,
"HeapMemoryUsage" : {
"committed" : 2104754176,
"init" : 2147483648,
"max" : 2104754176,
"used" : 395104928
},
"ObjectName" : "java.lang:type=Memory"
}, {
"name" : "Hadoop:service=HBase,name=RegionServer,sub=IPC",
"description" : "Metrics about HBase Server IPC",
"modelerType" : "RegionServer,sub=IPC",
"tag.Context" : {
"description" : "Metrics context",
"value" : "regionserver"
},
"tag.Hostname" : {
"description" : "Local hostname",
"value" : "devdeploy-os-amb-r6-uns-1430336073-4"
}
Here is top of master JMX:
{
"beans" : [ {
"name" : "java.lang:type=Memory",
"description" : "Information on the management interface of the MBean",
"modelerType" : "sun.management.MemoryImpl",
"Verbose" : true,
"ObjectPendingFinalizationCount" : 0,
"NonHeapMemoryUsage" : {
"committed" : 107048960,
"init" : 24313856,
"max" : 224395264,
"used" : 66834944
},
"HeapMemoryUsage" : {
"committed" : 252772352,
"init" : 261353600,
"max" : 2130051072,
"used" : 52166192
},
"ObjectName" : "java.lang:type=Memory"
}, {
"name" : "Hadoop:service=HBase,name=MetricsSystem,sub=Control",
"description" : "Information on the management interface of the MBean",
"modelerType" : "org.apache.hadoop.metrics2.impl.MetricsSystemImpl"
}, {
"name" : "Hadoop:service=HBase,name=Master,sub=AssignmentManger",
"description" : "Metrics about HBase master assingment manager.",
"modelerType" : "Master,sub=AssignmentManger",
"tag.Context" : {
"description" : "Metrics context",
"value" : "master"
},
On Thu, Apr 30, 2015 at 3:19 PM, Tapper, Gunnar <[email protected]>
wrote:
> Hi,
>
> The documentation says:
>
> “Click the Metrics Dump link near the top. The metrics for the region
> server are presented as a dump of the JMX bean in JSON format. This will
> dump out all metrics names and their values. To include metrics
> descriptions in the listing — this can be useful when you are exploring
> what is available — add a query string of ?description=true so your URL
> becomes http://REGIONSERVER_HOSTNAME:60030/jmx?description=true<
> http://regionserver_hostname:60030/jmx?description=true>. Not all beans
> and attributes have descriptions.”
>
> I can never get this to work for either the Master or RegionServers. No
> descriptions are provided.
>
> Could someone provide an example for BOTH the Master and a RegionServer
> with descriptions? I’d like to know what the different counters do.
>
> Thank you,
>
> Gunnar
>
> Download a free version of HPDSM, a unified big-data administration tool
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>
> “People don’t know what they want until you show it to them… Our task is
> to read things that are not yet on the page.” — Steve Jobs
>
>
>
>
