[MINOR] Register more classes with Kryo

[the-other-tim-brown]

Change Logs

• Register classes used in bloom index lookup

Impact

• Reduces serialized size which in turn reduces shuffle overhead

Risk level (write none, low medium or high below)

None

Documentation Update

Describe any necessary documentation update if there is any new feature, config, or user-facing change. If not, put "none".

• The config description must be updated if new configs are added or the default value of the configs are changed
• Any new feature or user-facing change requires updating the Hudi website. Please create a Jira ticket, attach the
  ticket number here and follow the instruction to make
  changes to the website.

Contributor's checklist

• Read through contributor's guide
• Change Logs and Impact were stated clearly
• Adequate tests were added if applicable
• CI passed

[nsivabalan]

cool
Is there a way we can search through entire code base and ensure we have all of them tracked here that needs kryo serialization?

[the-other-tim-brown]

cool Is there a way we can search through entire code base and ensure we have all of them tracked here that needs kryo serialization?

@nsivabalan there is a way to configure Kryo to fail if you encounter an unregistered class. We could do that to flush out the remaining classes

[hudi-bot]

CI report:

• d2a5f6c Azure: SUCCESS

Bot commands

@hudi-bot supports the following commands:

• @hudi-bot run azure re-run the last Azure build

[yihua]

Previously the new classes are added at the end but I think this is OK since the Kryo serde is only used in memory, not for any storage bytes any more.