CODEWITHSUNDEEP
netty
Jarod
Jarod

Reputation: 1712

what is causing this memory leak in netty

I have two server process, they communicate with two socket connections. Both connections are sending message oneway only.(one for c->s, one for s->c).

The server and the client bootstrap initialized with OioServerSocketChannelFactory / OioClientSocketChannelFactory respectively.

After some profiling, found object of these three classes never release(on both side). I don't use these classes directly and I only keep reference to two Channel object. 

java.util.concurrent.LinkedTransferQueue$Node 1005351 32171232  
org.jboss.netty.channel.Channels$2 1005351 24128424  
org.jboss.netty.channel.socket.ChannelRunnableWrapper 1005351 48256848

What kind of object leaked in my code might cause these objects not release?

UPDATE: the environment, jdk7u7, centos6 64bit, netty 3.5.3

Upvotes: 0

Views: 1898

Answers (2)

Norman Maurer
Norman Maurer

Reputation: 23567

This was because of a bug in Netty Oio impl. The bug was fixed as part of 3.5.4.Final. So please upgrade to 3.5.4.Final or 3.5.5.Final.

See [1].

[1] https://github.com/netty/netty/issues/520

Upvotes: 3

Jarod
Jarod

Reputation: 1712

It's a good chance this is a bug of netty. After I change OioServerSocketChannelFactory / OioClientSocketChannelFactory to NioServerSocketChannelFactory / NioClientSocketChannelFactory the problem is gone.

Upvotes: 0

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