[TAJO-1025] Network disconnection during query processing can cause infinite exceptions

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.9.0
• Component/s: RPC, Worker
• Assignee: Jihun Kang
• Reporter: Hyunsik Choi
• Created: 02/Sep/14 00:53
• Updated: 27/Sep/14 00:09
• Resolved: 24/Sep/14 06:46

Description

If network is disconnected during query processing, infinite exception will be caused as follows:

Actually, network disconnection may occur rarely in this area, but we should consider such a case too.

2014-09-02 09:46:48,673 ERROR org.apache.tajo.rpc.AsyncRpcClient: RPC Exception:java.net.SocketException: Network is unreachable
2014-09-02 09:46:48,673 ERROR org.apache.tajo.rpc.AsyncRpcClient: null,class org.apache.tajo.ipc.QueryMasterProtocol,Network is unreachable
java.net.SocketException: Network is unreachable
	at sun.nio.ch.Net.connect0(Native Method)
	at sun.nio.ch.Net.connect(Net.java:465)
	at sun.nio.ch.Net.connect(Net.java:457)
	at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:670)
	at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.connect(NioClientSocketPipelineSink.java:108)
	at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipelineSink.java:70)
	at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54)
	at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54)
	at org.jboss.netty.channel.Channels.connect(Channels.java:634)
	at org.jboss.netty.channel.AbstractChannel.connect(AbstractChannel.java:207)
	at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:229)
	at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:182)
	at org.apache.tajo.rpc.NettyClientBase.connect(NettyClientBase.java:76)
	at org.apache.tajo.rpc.NettyClientBase.init(NettyClientBase.java:63)
	at org.apache.tajo.rpc.AsyncRpcClient.<init>(AsyncRpcClient.java:77)
	at org.apache.tajo.rpc.RpcConnectionPool.makeConnection(RpcConnectionPool.java:64)
	at org.apache.tajo.rpc.RpcConnectionPool.getConnection(RpcConnectionPool.java:78)
	at org.apache.tajo.worker.TaskRunner$1.run(TaskRunner.java:378)
	at java.lang.Thread.run(Thread.java:744)
2014-09-02 09:46:48,673 ERROR org.apache.tajo.rpc.AsyncRpcClient: RPC Exception:java.net.SocketException: Network is unreachable
2014-09-02 09:46:48,673 ERROR org.apache.tajo.rpc.AsyncRpcClient: null,class org.apache.tajo.ipc.QueryMasterProtocol,Network is unreachable
java.net.SocketException: Network is unreachable
	at sun.nio.ch.Net.connect0(Native Method)
	at sun.nio.ch.Net.connect(Net.java:465)
	at sun.nio.ch.Net.connect(Net.java:457)
	at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:670)
	at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.connect(NioClientSocketPipelineSink.java:108)
	at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipelineSink.java:70)
	at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54)
	at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54)
	at org.jboss.netty.channel.Channels.connect(Channels.java:634)
	at org.jboss.netty.channel.AbstractChannel.connect(AbstractChannel.java:207)
	at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:229)
	at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:182)
	at org.apache.tajo.rpc.NettyClientBase.connect(NettyClientBase.java:76)
	at org.apache.tajo.rpc.NettyClientBase.init(NettyClientBase.java:63)
	at org.apache.tajo.rpc.AsyncRpcClient.<init>(AsyncRpcClient.java:77)
	at org.apache.tajo.rpc.RpcConnectionPool.makeConnection(RpcConnectionPool.java:64)
	at org.apache.tajo.rpc.RpcConnectionPool.getConnection(RpcConnectionPool.java:78)
	at org.apache.tajo.worker.TaskRunner$1.run(TaskRunner.java:378)
	at java.lang.Thread.run(Thread.java:744)

....

Issue Links

• is related to: TAJO-1050 RPC client does not retry during connecting