Weiwei Yang created HDFS-11830:
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Summary: 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
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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