Alexey Kudinkin created HUDI-5579:
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Summary: 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
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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