[FLUME-1641] Quickly reconnecting with Netty Avro RPC client causes OOME from lack of direct memory

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Client SDK
• Assignee: Unassigned
• Reporter: Mike Percy
• Created: 14/Oct/12 05:44
• Updated: 18/Nov/13 09:22

Description

There is an issue where a OutOfMemoryError can occur from too-quick reconnection attempts. Stack trace:

Exception in thread "main" java.lang.OutOfMemoryError: Direct buffer memory
at java.nio.Bits.reserveMemory(Bits.java:632)
at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:97)
at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:288)
at org.jboss.netty.channel.socket.nio.SocketSendBufferPool$Preallocation.<init>(SocketSendBufferPool.java:156)
at org.jboss.netty.channel.socket.nio.SocketSendBufferPool.<init>(SocketSendBufferPool.java:43)
at org.jboss.netty.channel.socket.nio.NioWorker.<init>(NioWorker.java:84)
at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.<init>(NioClientSocketPipelineSink.java:74)
at org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory.<init>(NioClientSocketChannelFactory.java:135)
at org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory.<init>(NioClientSocketChannelFactory.java:105)
at org.apache.avro.ipc.NettyTransceiver.<init>(NettyTransceiver.java:116)
at org.apache.flume.api.NettyAvroRpcClient.connect(NettyAvroRpcClient.java:120)
at org.apache.flume.api.NettyAvroRpcClient.connect(NettyAvroRpcClient.java:109)
at org.apache.flume.api.NettyAvroRpcClient.<init>(NettyAvroRpcClient.java:94)
at org.apache.flume.api.RpcClientFactory.getDefaultInstance(RpcClientFactory.java:131)
at org.apache.flume.api.RpcClientFactory.getDefaultInstance(RpcClientFactory.java:107)
at org.apache.flume.api.FailoverRpcClient.getNextClient(FailoverRpcClient.java:270)
at org.apache.flume.api.FailoverRpcClient.getClient(FailoverRpcClient.java:140)
at org.apache.flume.api.FailoverRpcClient.append(FailoverRpcClient.java:174)
... snip ...

Appears to be related to https://issues.jboss.org/browse/NETTY-424