MemoryUsage stays at 100% used forever after all messages are sent
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Key: AMQ-1974
URL: https://issues.apache.org/activemq/browse/AMQ-1974
Project: ActiveMQ
Issue Type: Bug
Affects Versions: 5.1.0
Environment: Linux with 2.6.18 kernel
JDK 1.5.0_15
Reporter: Neal Yin
Priority: Critical
We use a network of brokers and topic to do messaging. All our message
producers and consumers talk to the local VM broker. We reply on bridges
between network of brokers to move messages between brokers. We found a case
that MemoryUsage stays at 100% forever after all messages are sent.
I attached two files to show this memory leak problem. TryJmsClient keeps
sending persistent messages to a Topic. TryJmsManager has a message consumer.
Start TryJmsManager first and then start TryJmsClient. After running about 10
seconds, TryJmsClient stops sending because of getting "SystemUsage memory
limit reached" error. About 24K messages are sent and consumer shows it get all
messages. Now examine ActiveMQ MemoryUsage printout of TryJmsClient,
MemoryUsage percentage stays at 100% or 99% forever. Producer can never send
any more messages.
Note1: If I slow down sending by adding a sleep, I don't see memory leak
immediately. I am not sure for longer running time.
Note2: If I use Queue instead of Topic, there is no memory leak.
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