[HUDI-5506] StreamWriteOperatorCoordinator may not recommit with partial uncommitted write metadata event

[SteNicholas]

AbstractStreamWriteFunction may get the different pending instant for checkpoint among the subtasks because the StreamWriteOperatorCoordinator may be committing the instant of the last completed checkpoint when AbstractStreamWriteFunction invokes snapshotState. StreamWriteOperatorCoordinator may not recommit with partial uncommitted write metadata event when handling the last boostrap event which is empty boostrap event.

Change Logs

StreamWriteOperatorCoordinator#handleBootstrapEvent gets the inflight instant to initialize for recommit.

Impact

StreamWriteOperatorCoordinator recommits the last pending instant for handling boostrap events.

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

If medium or high, explain what verification was done to mitigate the risks.

Documentation Update

Describe any necessary documentation update if there is any new feature, config, or user-facing change

• 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

[SteNicholas]

@danny0405, @leesf, thanks for detailed review. I have removed the changes of the CkpMetadata and will create another pull request for the CkpMetadata. This pull request is mainly solved the recommit problem. PTAL.

[danny0405]

+1

[hudi-bot]

CI report:

• ac296c7 Azure: FAILURE

Bot commands

@hudi-bot supports the following commands:

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

[leesf]

Merging as Flink IT passed.