[HBASE-8667] Master and Regionserver not able to communicate if both bound to different network interfaces on the same machine.

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 0.98.0, 0.95.2
• Component/s: IPC/RPC
• Hadoop Flags: Reviewed
• Assignee: rajeshbabu
• Reporter: rajeshbabu
• Created: 31/May/13 01:37
• Updated: 31/Oct/13 21:49
• Resolved: 15/Aug/13 18:27

Description

While testing HBASE-8640 fix found that master and regionserver running on different interfaces are not communicating properly.
I have two interfaces 1) lo 2) eth0 in my machine and default hostname interface is lo.
I have configured master ipc address to ip of eth0 interface.

Started master and regionserver on the same machine.
1) master rpc server bound to eth0 and RS rpc server bound to lo
2) Since rpc client is not binding to any ip address, when RS is reporting RS startup its getting registered with eth0 ip address(but actually it should register localhost)

Here are RS logs:

2013-05-31 06:05:28,608 WARN  [regionserver60020] org.apache.hadoop.hbase.regionserver.HRegionServer: reportForDuty failed; sleeping and then retrying.
2013-05-31 06:05:31,609 INFO  [regionserver60020] org.apache.hadoop.hbase.regionserver.HRegionServer: Attempting connect to Master server at 192.168.0.100,60000,1369960497008
2013-05-31 06:05:31,609 INFO  [regionserver60020] org.apache.hadoop.hbase.regionserver.HRegionServer: Telling master at 192.168.0.100,60000,1369960497008 that we are up with port=60020, startcode=1369960502544
2013-05-31 06:05:31,618 DEBUG [regionserver60020] org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: hbase.rootdir=hdfs://localhost:2851/hbase
2013-05-31 06:05:31,618 DEBUG [regionserver60020] org.apache.hadoop.hbase.regionserver.HRegionServer: Config from master: fs.default.name=hdfs://localhost:2851
2013-05-31 06:05:31,618 INFO  [regionserver60020] org.apache.hadoop.hbase.regionserver.HRegionServer: Master passed us a different hostname to use; was=localhost, but now=192.168.0.100

Here are master logs:

2013-05-31 06:05:31,615 INFO  [IPC Server handler 9 on 60000] org.apache.hadoop.hbase.master.ServerManager: Registering server=192.168.0.100,60020,1369960502544

Since master has wrong rpc server address of RS, META is not getting assigned.

2013-05-31 06:05:34,362 DEBUG [master-192.168.0.100,60000,1369960497008] org.apache.hadoop.hbase.master.AssignmentManager: No previous transition plan was found (or we are ignoring an existing plan) for .META.,,1.1028785192 so generated a random one; hri=.META.,,1.1028785192, src=, dest=192.168.0.100,60020,1369960502544; 1 (online=1, available=1) available servers, forceNewPlan=false
-----
org.apache.hadoop.hbase.master.AssignmentManager: Failed assignment of .META.,,1.1028785192 to 192.168.0.100,60020,1369960502544, trying to assign elsewhere instead; try=1 of 10
java.net.ConnectException: Connection refused
	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
	at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:511)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:481)
	at org.apache.hadoop.hbase.ipc.RpcClient$Connection.setupConnection(RpcClient.java:549)
	at org.apache.hadoop.hbase.ipc.RpcClient$Connection.setupIOstreams(RpcClient.java:813)
	at org.apache.hadoop.hbase.ipc.RpcClient.getConnection(RpcClient.java:1422)
	at org.apache.hadoop.hbase.ipc.RpcClient.call(RpcClient.java:1315)
	at org.apache.hadoop.hbase.ipc.RpcClient.callBlockingMethod(RpcClient.java:1532)
	at org.apache.hadoop.hbase.ipc.RpcClient$BlockingRpcChannelImplementation.callBlockingMethod(RpcClient.java:1587)
	at org.apache.hadoop.hbase.protobuf.generated.AdminProtos$AdminService$BlockingStub.openRegion(AdminProtos.java:15039)
	at org.apache.hadoop.hbase.master.ServerManager.sendRegionOpen(ServerManager.java:627)
	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1826)
	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1453)
	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1432)
	at org.apache.hadoop.hbase.master.handler.ClosedRegionHandler.process(ClosedRegionHandler.java:104)
	at org.apache.hadoop.hbase.master.AssignmentManager.addToRITandCallClose(AssignmentManager.java:699)
	at org.apache.hadoop.hbase.master.AssignmentManager.processRegionsInTransition(AssignmentManager.java:584)
	at org.apache.hadoop.hbase.master.AssignmentManager.processRegionInTransition(AssignmentManager.java:517)
	at org.apache.hadoop.hbase.master.AssignmentManager.processRegionInTransitionAndBlockUntilAssigned(AssignmentManager.java:473)
	at org.apache.hadoop.hbase.master.HMaster.assignMeta(HMaster.java:917)
	at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:803)
	at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:547)
	at java.lang.Thread.run(Thread.java:636)

Issue Links

• relates to: HBASE-9842 Backport HBASE-9593 and HBASE-8667 to 0.94