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https://issues.apache.org/jira/browse/HUDI-5579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Kudinkin closed HUDI-5579.
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Resolution: Fixed
> Fixing Kryo classes registration for Spark
> ------------------------------------------
>
> Key: HUDI-5579
> URL: https://issues.apache.org/jira/browse/HUDI-5579
> Project: Apache Hudi
> Issue Type: Bug
> Components: spark
> Reporter: Alexey Kudinkin
> Assignee: Alexey Kudinkin
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 0.13.0
>
>
> Due to RFC-46 the profile of the data being serialized by Hudi had changed
> considerably: previously we're mostly passing around Avro payloads, while now
> we hold our own internal {{HoodieRecord}} implementations.
> When classes are not explicitly registered w/ Kryo, it would have to
> serialize class fully qualified name (FQN) as id every time an object is
> serialized, which carries a lot of [unnecessary
> overhead|https://github.com/apache/hudi/pull/7026/files#diff-81f9b48f7f7e71b46ea8764c7d63e310c871895d03640ae93c81b09f38306acb].
> To work this around in [#7026|https://github.com/apache/hudi/pull/7026] added
> {{HoodieSparkKryoRegistrar}} registering some of the commonly serialized Hudi
> classes. However, during rebasing/merging of the RFC-46 feature branch this
> changes have been partially reverted and so we need to restore that.
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