Attila Doroszlai created HDDS-2693:
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Summary: HddsVolume mixes ChunkLayOutVersion and
DataNodeLayoutVersion
Key: HDDS-2693
URL: https://issues.apache.org/jira/browse/HDDS-2693
Project: Hadoop Distributed Data Store
Issue Type: Bug
Components: Ozone Datanode
Reporter: Attila Doroszlai
Assignee: Attila Doroszlai
{{HddsVolume}} [initializes {{layoutVersion}} using latest
{{ChunkLayOutVersion}}|https://github.com/apache/hadoop-ozone/blob/1d56bc244995e857b842f62d3d1e544ee100bbc1/hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/volume/HddsVolume.java#L268].
But when writing the same info to file, it [verifies {{layoutVersion}}
matches the latest
{{DataNodeLayoutVersion}}|https://github.com/apache/hadoop-ozone/blob/1d56bc244995e857b842f62d3d1e544ee100bbc1/hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/volume/HddsVolume.java#L292-L293].
To satisfy the condition {{ChunkLayOutVersion}} and {{DataNodeLayoutVersion}}
have to be in sync, which means only one of them is necessary. I think the
intention was to use {{DataNodeLayoutVersion}} in both cases, as
{{ChunkLayOutVersion}} is for key-value container internal structure.
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