[HDFS-9669] TcpPeerServer should respect ipc.server.listen.queue.size

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.2
• Fix Version/s: 2.8.0, 2.7.3, 2.6.5, 3.0.0-alpha1
• Target Version/s: 2.7.3, 2.6.5
• Assignee: Elliott Neil Clark
• Reporter: Elliott Neil Clark
• Created: 20/Jan/16 07:48
• Updated: 06/Jan/17 07:34
• Resolved: 02/Feb/16 19:20

Description

On periods of high traffic we are seeing:

16/01/19 23:40:40 WARN hdfs.DFSClient: Connection failure: Failed to connect to /10.138.178.47:50010 for file /MYPATH/MYFILE for block BP-1935559084-10.138.112.27-1449689748174:blk_1080898601_7375294:java.io.IOException: Connection reset by peer
java.io.IOException: Connection reset by peer
	at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
	at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
	at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
	at sun.nio.ch.IOUtil.write(IOUtil.java:65)
	at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
	at org.apache.hadoop.net.SocketOutputStream$Writer.performIO(SocketOutputStream.java:63)
	at org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:142)
	at org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:159)
	at org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:117)
	at org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:109)
	at java.io.DataOutputStream.writeInt(DataOutputStream.java:197)

At the time that this happens there are way less xceivers than configured.

On most JDK's this will make 50 the total backlog at any time. This effectively means that any GC + Busy time willl result in tcp resets.

http://hg.openjdk.java.net/jdk8/jdk8/jdk/file/tip/src/share/classes/java/net/ServerSocket.java#l370