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https://issues.apache.org/jira/browse/AMQ-4715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13762334#comment-13762334
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Timothy Bish commented on AMQ-4715:
-----------------------------------
GC is a lazy process and there's nothing that requires it to run during this
code if it doesn't get to a point where it's really needed.
> Memory issue with ActiveMQ in java
> ----------------------------------
>
> Key: AMQ-4715
> URL: https://issues.apache.org/jira/browse/AMQ-4715
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.6.0, 5.7.0
> Reporter: ritesh
>
> Every time when i start connection and create session i can see “java.exe”
> (in task manger) memory get increase by 1000 to 2000K that’s ok.
> Now, when i closed connection and session expecting to memory go down by
> 1000 to 2000K but nothing happening.
> Here is my sample code.
> {code}
> public static void main(String[] args)
> {
> try
> {
> ActiveMQConnectionFactory connectionFactory = new
> ActiveMQConnectionFactory("tcp://localhost:61616");
> Connection connection= connectionFactory.createConnection();
> connection.start();
> for(int i=0;i<40;i++)
> {
> Session session= m_connection.createSession(false,
> Session.CLIENT_ACKNOWLEDGE);
> Destination queueDestination = session.createQueue("TestQueue");
> MessageProducer producer = session.createProducer(queueDestination);
> producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
> TextMessage textMessage = session.createTextMessage();
> textMessage.setText(“some text”);
> String jmsCorrelationId= UUID.randomUUID().toString();
> textMessage.setJMSCorrelationID(m_jmsCorrelationId);
> producer.send(textMessage);
> if(!producer.equals(null))
> {
> producer.close();
> producer=null;
> }
> if(!m_session.equals(null))
> {
> session.close();
> ession=null;
> }
> } // end for loop
> if(connection!=null)
> {
> connection.close();
> }
> }
> {code}
> If you will execute this program three to four times you will see significant
> memory get increase in task manger for “java.exe”.
> Thing most bothering me is that… after executing this program all allocated
> memory should get cleaned-up by GC but look like somehow it’s not happening.
> No idea what am I doing wrong?
> Please help me!
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