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https://issues.apache.org/jira/browse/HDFS-11830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16450667#comment-16450667
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Hudson commented on HDFS-11830:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14057 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14057/])
HDFS-11830. Ozone: Datanode needs to re-register to SCM if SCM is (wwei: rev
b4e5c5543604ec9672cf445c6f22c2ca03de2d15)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/scm/node/CommandQueue.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/scm/StorageContainerManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/scm/node/TestNodeManager.java
* (add)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/protocol/commands/ReregisterCommand.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/container/common/states/endpoint/HeartbeatEndpointTask.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/proto/StorageContainerDatanodeProtocol.proto
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/scm/node/SCMNodeManager.java
> Ozone: Datanode needs to re-register to SCM if SCM is restarted
> ---------------------------------------------------------------
>
> Key: HDFS-11830
> URL: https://issues.apache.org/jira/browse/HDFS-11830
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Priority: Critical
> Fix For: HDFS-7240
>
> Attachments: HDFS-11830-HDFS-7240.001.patch,
> HDFS-11830-HDFS-7240.002.patch, HDFS-11830-HDFS-7240.003.patch,
> HDFS-11830-HDFS-7240.004.patch
>
>
> Problem description:
> # Start NN, DN, SCM
> # Restart SCM and will see following warnings in SCM log
> 17/05/02 00:47:08 WARN node.SCMNodeManager: SCM receive heartbeat from
> unregistered datanode
> Datanode could not re-establish communication with SCM afterwards. Propose to
> fix this by adding a new command in HB handling telling datanode to
> re-register with SCM. Datanode once received this command transits to
> REGISTER state again to proceed.
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