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https://issues.apache.org/jira/browse/HDDS-2107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hanisha Koneru resolved HDDS-2107.
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Resolution: Fixed
> Datanodes should retry forever to connect to SCM in an unsecure environment
> ---------------------------------------------------------------------------
>
> Key: HDDS-2107
> URL: https://issues.apache.org/jira/browse/HDDS-2107
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Datanode
> Affects Versions: 0.4.1
> Reporter: Vivek Ratnavel Subramanian
> Assignee: Vivek Ratnavel Subramanian
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> In an unsecure environment, the datanodes try upto 10 times after waiting for
> 1000 milliseconds each time before throwing this error:
> {code:java}
> Unable to communicate to SCM server at scm:9861 for past 0 seconds.
> java.net.ConnectException: Call From scm/10.65.36.118 to scm:9861 failed on
> connection exception: java.net.ConnectException: Connection refused; For more
> details see: http://wiki.apache.org/hadoop/ConnectionRefused
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:831)
> at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:755)
> at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1515)
> at org.apache.hadoop.ipc.Client.call(Client.java:1457)
> at org.apache.hadoop.ipc.Client.call(Client.java:1367)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:228)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
> at com.sun.proxy.$Proxy33.getVersion(Unknown Source)
> at
> org.apache.hadoop.ozone.protocolPB.StorageContainerDatanodeProtocolClientSideTranslatorPB.getVersion(StorageContainerDatanodeProtocolClientSideTranslatorPB.java:112)
> at
> org.apache.hadoop.ozone.container.common.states.endpoint.VersionEndpointTask.call(VersionEndpointTask.java:70)
> at
> org.apache.hadoop.ozone.container.common.states.endpoint.VersionEndpointTask.call(VersionEndpointTask.java:42)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
> at
> org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
> at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531)
> at
> org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:690)
> at
> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:794)
> at org.apache.hadoop.ipc.Client$Connection.access$3700(Client.java:411)
> at org.apache.hadoop.ipc.Client.getConnection(Client.java:1572)
> at org.apache.hadoop.ipc.Client.call(Client.java:1403)
> ... 13 more
> {code}
> The datanodes should try forever to connect with SCM and not throw any errors.
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