danny0405 commented on a change in pull request #2430:
URL: https://github.com/apache/hudi/pull/2430#discussion_r556376012
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File path: hudi-common/src/main/avro/HoodieRollbackMetadata.avsc
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@@ -51,10 +51,10 @@
/* overlaps with 'commitsRollback' field. Adding this to track action
type for all the instants being rolled back. */
{
"name": "instantsRollback",
- "default": null,
+ "default": [],
"type": {
"type": "array",
- "default": null,
+ "default": [],
"items": "HoodieInstantInfo"
Review comment:
The type for field `instantsRollback` is `array` ( not a union type)
which is not nullable, so it is reasonable that the default be an empty array
`[]`. The old version Avro does not check the validity.
I also check the usage of method `getInstantsRollback` of class
`HoodieRollbackMetadata`, the version less than 1.10 are not affected.
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