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https://issues.apache.org/jira/browse/HADOOP-16238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16833641#comment-16833641
]
Peter Bacsko commented on HADOOP-16238:
---------------------------------------
I uploaded patch v5 where the default is "true".
> Add the possbility to set SO_REUSEADDR in IPC Server Listener
> -------------------------------------------------------------
>
> Key: HADOOP-16238
> URL: https://issues.apache.org/jira/browse/HADOOP-16238
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Reporter: Peter Bacsko
> Assignee: Peter Bacsko
> Priority: Minor
> Attachments: HADOOP-16238-001.patch, HADOOP-16238-002.patch,
> HADOOP-16238-003.patch, HADOOP-16238-004.patch, HADOOP-16238-005.patch
>
>
> Currently we can't enable SO_REUSEADDR in the IPC Server. In some
> circumstances, this would be desirable, see explanation here:
> [https://developer.ibm.com/tutorials/l-sockpit/#pitfall-3-address-in-use-error-eaddrinuse-]
> Rarely it also causes problems in a test case
> {{TestMiniMRClientCluster.testRestart}}:
> {noformat}
> 2019-04-04 11:21:31,896 INFO [main] service.AbstractService
> (AbstractService.java:noteFailure(273)) - Service
> org.apache.hadoop.yarn.server.resourcemanager.AdminService failed in state
> STARTED; cause: org.apache.hadoop.yarn.exceptions.YarnRuntimeException:
> java.net.BindException: Problem binding to [test-host:35491]
> java.net.BindException: Address already in use; For more details see:
> http://wiki.apache.org/hadoop/BindException
> org.apache.hadoop.yarn.exceptions.YarnRuntimeException:
> java.net.BindException: Problem binding to [test-host:35491]
> java.net.BindException: Address already in use; For more details see:
> http://wiki.apache.org/hadoop/BindException
> at
> org.apache.hadoop.yarn.factories.impl.pb.RpcServerFactoryPBImpl.getServer(RpcServerFactoryPBImpl.java:138)
> 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.AdminService.startServer(AdminService.java:178)
> at
> org.apache.hadoop.yarn.server.resourcemanager.AdminService.serviceStart(AdminService.java:165)
> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
> at
> org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:121)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceStart(ResourceManager.java:1244)
> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
> at
> org.apache.hadoop.yarn.server.MiniYARNCluster.startResourceManager(MiniYARNCluster.java:355)
> at
> org.apache.hadoop.yarn.server.MiniYARNCluster.access$300(MiniYARNCluster.java:127)
> at
> org.apache.hadoop.yarn.server.MiniYARNCluster$ResourceManagerWrapper.serviceStart(MiniYARNCluster.java:493)
> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
> at
> org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:121)
> at
> org.apache.hadoop.yarn.server.MiniYARNCluster.serviceStart(MiniYARNCluster.java:312)
> at
> org.apache.hadoop.mapreduce.v2.MiniMRYarnCluster.serviceStart(MiniMRYarnCluster.java:210)
> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
> at
> org.apache.hadoop.mapred.MiniMRYarnClusterAdapter.restart(MiniMRYarnClusterAdapter.java:73)
> at
> org.apache.hadoop.mapred.TestMiniMRClientCluster.testRestart(TestMiniMRClientCluster.java:114)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62){noformat}
>
> At least for testing, having this socket option enabled is benefical. We
> could enable this with a new property like {{ipc.server.reuseaddr}}.
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