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https://issues.apache.org/jira/browse/HUDI-3342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Kudinkin updated HUDI-3342:
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Priority: Blocker (was: Major)
> MOR Delta Block rollbacks is not working correctly if lazy Block reading is
> disabled
> ------------------------------------------------------------------------------------
>
> Key: HUDI-3342
> URL: https://issues.apache.org/jira/browse/HUDI-3342
> Project: Apache Hudi
> Issue Type: Bug
> Reporter: Alexey Kudinkin
> Priority: Blocker
>
> While working on HUDI-3322, i've spotted following contraption:
> When we are rolling back Delta Commits, we add corresponding
> {{ROLLBACK_PREVIOUS_BLOCK}} Command Block at the back of the "queue".
>
> However, when reading that MOR table if the reader does not specify
> `readBlocksLazily=true`, we'd be merging Blocks eagerly therefore essentially
> rendering such Rollback Blocks useless, resurrecting the data that was
> previously rolled back.
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