jmx - Negative count in ActiveMQ pending message -

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i monitoring activemq using jmx . using below link activemq summary 

http://localhost:8161/api/jolokia/read/org.apache.activemq:type=broker,brokername=localhost/brokerid,totalenqueuecount,totaldequeuecount,totalconsumercount,totalmessagecount,totalconnectionscount,totalconsumercount,totalproducercount,memorylimit,memorypercentusage,storelimit,storepercentusage

at time t1

i sending 100 message activemq didn't dequeue message.now summary likes below

{     "timestamp" : 1437996108,     "status" : 200,     "request" : {         "mbean" : "org.apache.activemq:brokername=localhost,type=broker",         "attribute" : ["brokerid", "totalenqueuecount", "totaldequeuecount", "totalconsumercount", "totalmessagecount", "totalconnectionscount", "totalconsumercount", "totalproducercount", "memorylimit", "memorypercentusage", "storelimit", "storepercentusage"],         "type" : "read"     },     "value" : {         "brokerid" : "id:synclap5489-54676-1437995895016-0:1",         "totalconnectionscount" : 100,         "totaldequeuecount" : 0,         "storelimit" : 104857600,         "totalconsumercount" : 0,         "totalmessagecount" : 100,         "totalproducercount" : 0,         "memorypercentusage" : 0,         "storepercentusage" : 9,         "totalenqueuecount" : 100,         "memorylimit" : 739717939     } }

and stopped activemq server 100 message in pending status.

at time t2

started activemq again , sent 100 message not deque message. json data below

{     "timestamp" : 1437996721,     "status" : 200,     "request" : {         "mbean" : "org.apache.activemq:brokername=localhost,type=broker",         "attribute" : ["brokerid", "totalenqueuecount", "totaldequeuecount", "totalconsumercount", "totalmessagecount", "totalconnectionscount", "totalconsumercount", "totalproducercount", "memorylimit", "memorypercentusage", "storelimit", "storepercentusage"],         "type" : "read"     },     "value" : {         "brokerid" : "id:synclap5489-55183-1437996657303-0:1",         "totalconnectionscount" : 100,         "totaldequeuecount" : 0,         "storelimit" : 104857600,         "totalconsumercount" : 0,         "totalmessagecount" : 100,         "totalproducercount" : 0,         "memorypercentusage" : 0,         "storepercentusage" : 9,         "totalenqueuecount" : 100,         "memorylimit" : 739717939     } }

after deque

after dequeue message getting json data below 

{     "timestamp" : 1437997015,     "status" : 200,     "request" : {         "mbean" : "org.apache.activemq:brokername=localhost,type=broker",         "attribute" : ["brokerid", "totalenqueuecount", "totaldequeuecount", "totalconsumercount", "totalmessagecount", "totalconnectionscount", "totalconsumercount", "totalproducercount", "memorylimit", "memorypercentusage", "storelimit", "storepercentusage"],         "type" : "read"     },     "value" : {         "brokerid" : "id:synclap5489-55183-1437996657303-0:1",         "totalconnectionscount" : 101,         "totaldequeuecount" : 200,         "storelimit" : 104857600,         "totalconsumercount" : 1,         "totalmessagecount" : -100,         "totalproducercount" : 0,         "memorypercentusage" : 0,         "storepercentusage" : 9,         "totalenqueuecount" : 100,         "memorylimit" : 739717939     } }

totaldequeuecount changes 200 totalenqueuecount remains 100 totalmessagecount changes -100.

my question :

why getting negative value in totalmessagecount ?

why happen when broker has been restarted pending message ?

how resolve ?


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