ChenSammi opened a new pull request, #7930:
URL: https://github.com/apache/ozone/pull/7930
## What changes were proposed in this pull request?
Remove chunkPath and metadataPath from container yaml file
Changes made in this patch,
1) add a DATANODE_SCHEMA_V4 Datanode Layout feature
2) add a "4" schemaVersion for container schema V4
3) behavior
1) before feature "DATANODE_SCHEMA_V4" is finalized, new
createContainerRequest/importContainer will create V3 container
2) after feature "DATANODE_SCHEMA_V4" is finalized,
createContainerRequest will create V4 container. If import a schema V4
container, it will be automatically converted to V4 schema container. A schema
V2 container will not change, remains as a V2 container.
So if it's a V2/V3 schema container, its yaml file will have chunkPath and
metadataPath. If it's a V4 schema container, then its yaml file doesn't have
chunkPath and metadataPath.
## What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-6611
## How was this patch tested?
1. new unit tests
2. enabled Schema V4 for some existing unit tests which test container
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