[AMQ-1873] Stomp connections doesn't seem to be released cleanly (Too many open files error)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 5.1.0
• Fix Version/s: NEEDS_REVIEW

Environment

Linux RHEL 4
java version "1.5.0_15"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
Java HotSpot(TM) Server VM (build 1.5.0_15-b04, mixed mode)

• Assignee: Unassigned
• Reporter: Julien Devemy
• Created: 30/Jul/08 08:01
• Updated: 05/Jul/11 20:31
• Resolved: 05/Jul/11 20:31

Description

I'm actually testing ActiveMQ with a python stomp Client (stomp.py http://www.briggs.net.nz/log/projects/stomppy/).

I'm trying to load the broker with ~200 producers (on ~200 hosts) feeding one TOPIC for only one consumer.

Everything is working almost fine until the client connection fails.

The ActiveMQ log displays :
...
2008-07-30 09:28:43,665 [localhost:61613] ERROR TransportConnector - Could not accept connection : Too many open files
2008-07-30 09:28:43,665 [localhost:61613] DEBUG TransportConnector - Reason: Too many open files
java.net.SocketException: Too many open files
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
at java.net.ServerSocket.implAccept(ServerSocket.java:450)
at java.net.ServerSocket.accept(ServerSocket.java:421)
at org.apache.activemq.transport.tcp.TcpTransportServer.run(TcpTransportServer.java:221)
at java.lang.Thread.run(Thread.java:595)

When I look at the open files (or connections) (with lsof) I see 65446 lines like :

java 26765 root *066u sock 0,4 7534034 can't identify protocol

This seems to indicate that ActiveMQ doesn't totally released the UNIX socket

I'm attaching the activemq.xml conf file.