Andrew Wang created HDFS-11188:
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Summary: Change min supported DN and NN versions back to 2.x
Key: HDFS-11188
URL: https://issues.apache.org/jira/browse/HDFS-11188
Project: Hadoop HDFS
Issue Type: Sub-task
Components: rolling upgrades
Affects Versions: 3.0.0-alpha1
Reporter: Andrew Wang
Priority: Critical
This is the inverse of HDFS-10398 and HADOOP-13142. Currently, trunk requires a
software DN and NN version of 3.0.0-alpha1. This means we cannot perform a
rolling upgrade from 2.x to 3.x.
The first step towards supporting rolling upgrade is changing these back to a
2.x version. For reference, branch-2 has these versions set to "2.1.0-beta".
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