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https://issues.apache.org/jira/browse/YARN-7164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16155606#comment-16155606
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Jason Lowe commented on YARN-7164:
----------------------------------
Stacktrace:
{noformat}
org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.BindException:
Problem binding to [0.0.0.0:45020] java.net.BindException: Address already in
use; For more details see: http://wiki.apache.org/hadoop/BindException
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at
sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.apache.hadoop.ipc.Server.bind(Server.java:546)
at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:955)
at org.apache.hadoop.ipc.Server.<init>(Server.java:2655)
at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:968)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server.<init>(ProtobufRpcEngine.java:367)
at
org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:342)
at org.apache.hadoop.ipc.RPC$Builder.build(RPC.java:810)
at
org.apache.hadoop.yarn.factories.impl.pb.RpcServerFactoryPBImpl.createServer(RpcServerFactoryPBImpl.java:173)
at
org.apache.hadoop.yarn.factories.impl.pb.RpcServerFactoryPBImpl.getServer(RpcServerFactoryPBImpl.java:132)
at
org.apache.hadoop.yarn.ipc.HadoopYarnProtoRPC.getServer(HadoopYarnProtoRPC.java:65)
at org.apache.hadoop.yarn.ipc.YarnRPC.getServer(YarnRPC.java:54)
at
org.apache.hadoop.yarn.server.resourcemanager.ApplicationMasterService.serviceStart(ApplicationMasterService.java:150)
at
org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at
org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStart(ResourceManager.java:704)
at
org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.startActiveServices(ResourceManager.java:1160)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:1200)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:1196)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1945)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.transitionToActive(ResourceManager.java:1196)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceStart(ResourceManager.java:1236)
at
org.apache.hadoop.yarn.client.api.impl.TestAMRMClientOnRMRestart$MyResourceManager.serviceStart(TestAMRMClientOnRMRestart.java:596)
at
org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at
org.apache.hadoop.yarn.client.api.impl.TestAMRMClientOnRMRestart.testAMRMClientOnAMRMTokenRollOverOnRMRestart(TestAMRMClientOnRMRestart.java:495)
{noformat}
The problem is that YARN-4251 tried to use SocketServerUtil.getPort to find a
free port, but the port can be taken by another process before the RM gets
around to binding to the specified port. For this unit test the port number is
not important, so the code should just let the system find a free port rather
than manually finding one and hope it's still free when it tries to bind to it
later.
> TestAMRMClientOnRMRestart fails sporadically with bind address in use
> ---------------------------------------------------------------------
>
> Key: YARN-7164
> URL: https://issues.apache.org/jira/browse/YARN-7164
> Project: Hadoop YARN
> Issue Type: Bug
> Components: test
> Affects Versions: 2.8.0
> Reporter: Jason Lowe
> Assignee: Jason Lowe
>
> Saw a bind address in use exception in
> TestAMRMClientOnRMRestart#testAMRMClientOnAMRMTokenRollOverOnRMRestart on
> Hadoop 2.8. The error looks similar to YARN-4251, but that fix was already
> present.
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