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From Vishnu <blrvard...@yahoo.co.in>
Subject ActiveMQ service is getting stopped if the SQL connectivity is lost
Date Tue, 13 Dec 2016 12:04:59 GMT
system is horizontally scaled with 2 TG nodes.

 It appears to be on Node 2 only, the ActiveMQ service is frequently stopped
by the system. 
We see some SQL connectivity issue in the logs, around the same time frame.
But we do not see ActiveMQ on node 1 is being affected. 
 Its the Node 2 ActiveMQ that is stopping.

Message data store is mapped to database.

2016-11-18 23:28:40,310 | WARN | Cannot create tables due to:
com.microsoft.sqlserver.jdbc.SQLServerException:
 2016-11-23 01:13:00,794 | WARN | Cannot create tables due to:
com.microsoft.sqlserver.jdbc.SQLServerException:

Finally Active MQ could not able manage the situation properly due that it
is losing the destinations map , to restablish the transport connectors with
destinations , Active MQ got initiated completely to shutdown.Below is the
error 

java.lang.NullPointerException
 at
org.apache.activemq.util.DefaultIOExceptionHandler$1$1.run(DefaultIOExceptionHandler.java:114)[activemq-broker-5.13.1.jar:5.13.1]

2016-11-23 01:13:01,205 | INFO | Stopping BrokerService[localhost] due to
exception, java.lang.NullPointerException |
org.apache.activemq.util.DefaultIOExceptionHandler | IOExceptionHandler:
restart transports
 java.lang.NullPointerException




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