Brandon Li created HDFS-6060:
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Summary: NameNode should not check DataNode layout version
Key: HDFS-6060
URL: https://issues.apache.org/jira/browse/HDFS-6060
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Brandon Li
Assignee: Brandon Li
In current code, NameNode allows DataNode layout version to be different only
when the NameNode is in rolling upgrade mode. DataNode can't register with
NameNode when only DataNode is to be upgraded with a layout version different
with that on NameNode.
NameNode should not check DataNode layout version in any cases.
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