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https://issues.apache.org/jira/browse/HDFS-11845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16044496#comment-16044496
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Weiwei Yang commented on HDFS-11845:
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[~anu], [~xyao] please kindly review. Thanks.
> Ozone: Output error when DN handshakes with SCM
> -----------------------------------------------
>
> Key: HDFS-11845
> URL: https://issues.apache.org/jira/browse/HDFS-11845
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Priority: Minor
> Attachments: HDFS-11845-HDFS-7240.001.patch
>
>
> When start SCM and DN, there is always an error in SCM log
> {noformat}
> 17/05/17 15:19:59 WARN ipc.Server: IPC Server handler 9 on 9861, call Call#4
> Retry#0
> org.apache.hadoop.ozone.protocol.StorageContainerDatanodeProtocol.getVersion
> from 172.16.165.133:44824: output error
> 17/05/17 15:19:59 INFO ipc.Server: IPC Server handler 9 on 9861 caught an
> exception
> java.nio.channels.ClosedChannelException
> at
> sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:270)
> at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:461)
> at org.apache.hadoop.ipc.Server.channelWrite(Server.java:3216)
> at org.apache.hadoop.ipc.Server.access$1600(Server.java:135)
> at
> org.apache.hadoop.ipc.Server$Responder.processResponse(Server.java:1463)
> at org.apache.hadoop.ipc.Server$Responder.doRespond(Server.java:1533)
> at
> org.apache.hadoop.ipc.Server$Connection.sendResponse(Server.java:2581)
> at org.apache.hadoop.ipc.Server$Connection.access$300(Server.java:1605)
> at org.apache.hadoop.ipc.Server$RpcCall.doResponse(Server.java:931)
> at org.apache.hadoop.ipc.Server$Call.sendResponse(Server.java:765)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:876)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:813)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1965)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2659)
> {noformat}
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