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Posted to hdfs-dev@hadoop.apache.org by "Akira Ajisaka (Jira)" <ji...@apache.org> on 2019/08/20 08:51:00 UTC
[jira] [Created] (HDFS-14753) Document HDFS-8432 (Introduce a
minimum compatible layout version to allow downgrade in more rolling
upgrade use cases)
Akira Ajisaka created HDFS-14753:
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Summary: Document HDFS-8432 (Introduce a minimum compatible layout version to allow downgrade in more rolling upgrade use cases)
Key: HDFS-14753
URL: https://issues.apache.org/jira/browse/HDFS-14753
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs, rolling upgrades
Reporter: Akira Ajisaka
After HDFS-8432, we can downgrade to the different layout version if the layout version of the destination is equal to or greater than the minimum compatible layout version of the source. This information is very important for administrators and it needs to be documented.
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