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https://issues.apache.org/jira/browse/HDDS-13601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-13601:
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Labels: pull-request-available (was: )
> Handle Upgrade of DN and Improve Duplicate Transaction check in
> DeleteBlocksCommandHandler
> ------------------------------------------------------------------------------------------
>
> Key: HDDS-13601
> URL: https://issues.apache.org/jira/browse/HDDS-13601
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Priyesh K
> Assignee: Priyesh K
> Priority: Major
> Labels: pull-request-available
>
> *Duplicate Transaction Handling*
> Problem: The handler currently only checks for duplicate transaction IDs.
> Gap: When SCM retries a transaction, the DN may receive the same {{txnId}}
> again, even though it has already been processed.
> Solution:
> # Enhance the logic to check both {{delete_txn}} table and
> {{{}block_table{}}}.
> # This ensures we correctly identify if the transaction has already been
> applied, avoiding unnecessary re-processing.
> *Upgrade Handling with Block Size*
> * New block size information has been included in delete transactions.
> * To support backward compatibility, upgrade scenarios must be handled using
> the newly added {{{}HDDSLayoutFeature{}}}.
> * This guarantees that older data is still valid after the upgrade while
> allowing newer block size details to be used.
> *Unit Testing*
> Add unit tests to cover:
> * Duplicate transaction checks using {{delete_txn}} and {{{}block_table{}}}.
> * Upgrade scenarios with {{HDDSLayoutFeature}} to validate block size
> handling.
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