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  • fix retry scenario for query to table materialization

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* fix retry scenario for query to table materialization

* fix retry scenario for query to table materialization
@stankiewicz stankiewicz changed the title fix retry scenario for query to table materialization (#36912) cherry pick fix retry scenario for query to table materialization (#36912) Nov 26, 2025
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Summary of Changes

Hello @stankiewicz, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the robustness of BigQuery query-to-table materialization within Apache Beam. It addresses a potential issue where retries could lead to incorrect states due to leftover temporary tables. By adding a mechanism to explicitly remove these temporary tables before each materialization attempt, the change ensures a clean and consistent execution environment, thereby improving the reliability of data processing pipelines.

Highlights

  • Retry Scenario Fix: Implemented a fix for retry scenarios during BigQuery query-to-table materialization to ensure correctness by proactively removing any temporary tables that might have been left from previous failed attempts.
  • Temporary Table Cleanup: Introduced a new method removeDestinationIfExists in BigQueryStorageQuerySource to identify and delete temporary BigQuery tables.
  • Integration with BigQueryIO: Integrated the temporary table cleanup logic into BigQueryIO's query processing, ensuring that the cleanup occurs before attempting to get the target table.
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@damccorm damccorm left a comment

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Thanks!

@damccorm damccorm merged commit e075a50 into apache:release-2.70 Nov 26, 2025
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