[CAMEL-8724] netty4-http component is leaking TCPWorker threads

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Incomplete
• Affects Version/s: 2.15.1
• Component/s: camel-netty-http
• Estimated Complexity: Unknown
• Assignee: Unassigned
• Reporter: Homayoun Zariv
• Created: 30/Apr/15 16:57
• Updated: 09/Jul/15 09:49
• Resolved: 09/Jul/15 09:49

Description

I am using netty4-http component in my route as Consumer and Producer as follow:

Consumer: camelContext.getEndpoint("netty4-http:http://0.0.0.0:8080/Shopping");
Producer: camelContext.getEndpoint(String.format("netty4-http:http://%s:80/ws/svc/Shopping?throwExceptionOnFailure=false", SHOPPING_LW));

I am using Netty4 options out-of-the-box from netty4-http component and I am noticing that the number of NettyClientTCPWorker and NettyServerTCPWorker keeps growing as I run tests to the points that chokes the JVM.

Following is a small sample of these threads getting created but never go away.

Camel (camel-1) thread #0 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #1 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #10 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #11 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #12 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #13 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #14 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #15 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #2 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #3 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #4 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #5 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #6 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #7 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #8 - NettyEventExecutorGroup Daemon=true Priority=5
Camel (camel-1) thread #9 - NettyEventExecutorGroup Daemon=true Priority=5
Camel Thread #1007 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1016 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1019 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1020 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1021 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1027 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1366 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1367 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1368 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1371 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1372 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1423 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1424 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1429 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #16 - NettyServerTCPBoss Daemon=false Priority=5
Camel Thread #1649 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1681 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #17 - NettyServerTCPWorker Daemon=false Priority=5
Camel Thread #1713 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1714 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1715 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1716 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1717 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #18 - NettyServerTCPWorker Daemon=false Priority=5
Camel Thread #1873 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #19 - NettyServerTCPWorker Daemon=false Priority=5
Camel Thread #1905 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1906 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1907 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1908 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #1909 - NettyClientTCPWorker Daemon=false Priority=5
Camel Thread #20 - NettyServerTCPWorker Daemon=false Priority=5