Lionel Cons created AMQ-9748:
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Summary: Incorrect CurrentConnectionsCount metric
Key: AMQ-9748
URL: https://issues.apache.org/jira/browse/AMQ-9748
Project: ActiveMQ Classic
Issue Type: Bug
Affects Versions: 6.1.5
Reporter: Lionel Cons
In some cases, the current number of connections (as reported via JMX) is not
correct.
We did not find any easy way to reproduce the problem. It seems to happen when
there are some rapid re-connections from the client side. Then the counter
stays wrong (too high) until the broker is restarted.
Here is for instance what can currently be seen on one broker:
{code}
# jolokia http://localhost:61705/api/jolokia read
'org.apache.activemq:type=Broker,brokerName=*' CurrentConnectionsCount
{"org.apache.activemq:brokerName=lhcb_mb129.cern.ch,type=Broker":{"CurrentConnectionsCount":4955}}
# netstat --tcp -n | grep ESTABLISHED | wc -l
63
{code}
So ActiveMQ reports 4955 active/current connections but the OS (Linux here)
disagrees.
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