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From "rajeshbabu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8667) Master and Regionserver not able to communicate if both bound to different network interfaces on the same machine.
Date Fri, 31 May 2013 19:19:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13671750#comment-13671750

rajeshbabu commented on HBASE-8667:

bq. So here server @RS was bound to a different hostname/ip but the master sees RS identity
as another. Master looks at connection's remote host name to decide what is the hostname of
the RS.
Yes Anoop, exactly this is happening. 
Presently no address bound to rpc client socket so connections remote hostname is deciding
by the interface from which the communication is happening.
What about an idea of binding master and RS ipc addresses(port is 0) to the rpcclient sockets
in master and RS to avoid problems like this issue?
> Master and Regionserver not able to communicate if both bound to different network interfaces
on the same machine.
> ------------------------------------------------------------------------------------------------------------------
>                 Key: HBASE-8667
>                 URL: https://issues.apache.org/jira/browse/HBASE-8667
>             Project: HBase
>          Issue Type: Bug
>          Components: IPC/RPC
>            Reporter: rajeshbabu
>            Assignee: rajeshbabu
>             Fix For: 0.98.0, 0.95.2, 0.94.9
> 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:
> {code}
> 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,60000,1369960497008
> 2013-05-31 06:05:31,609 INFO  [regionserver60020] org.apache.hadoop.hbase.regionserver.HRegionServer:
Telling master at,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=
> {code}
> Here are master logs:
> {code}
> 2013-05-31 06:05:31,615 INFO  [IPC Server handler 9 on 60000] org.apache.hadoop.hbase.master.ServerManager:
Registering server=,60020,1369960502544
> {code}
> Since master has wrong rpc server address of RS, META is not getting assigned.
> {code}
> 2013-05-31 06:05:34,362 DEBUG [master-,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=,60020,1369960502544;
1 (online=1, available=1) available servers, forceNewPlan=false
> -----
> org.apache.hadoop.hbase.master.AssignmentManager: Failed assignment of .META.,,1.1028785192
to,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)
> {code}

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