[Data Validation] Max Columns Wide Row IT

[aasthabharill]

https://docs.cloud.google.com/spanner/quotas#tables

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.81%. Comparing base (4efa054) to head (566a6c5).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #4083      +/-   ##
============================================
+ Coverage     56.07%   63.81%   +7.74%     
+ Complexity     7316     2686    -4630     
============================================
  Files          1127      557     -570     
  Lines         68572    31536   -37036     
  Branches       7757     3488    -4269     
============================================
- Hits          38450    20126   -18324     
+ Misses        27635    10378   -17257     
+ Partials       2487     1032    -1455     

Components	Coverage Δ
spanner-templates	87.42% <ø> (ø)
spanner-import-export	∅ <ø> (∅)
spanner-live-forward-migration	89.26% <ø> (ø)
spanner-live-reverse-replication	83.18% <ø> (ø)
spanner-bulk-migration	92.23% <ø> (ø)
gcs-spanner-dv	88.54% <ø> (ø)
see 591 files with indirect coverage changes

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[gemini-code-assist]

Summary of Changes

Hello, 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 introduces a new integration test to ensure the GCS to Spanner Data Validation (DV) template correctly handles wide rows with up to 1024 columns. The test verifies that the system can accurately identify and report mismatches in high-column-count datasets, ensuring robustness for large-scale data validation tasks.

Highlights

• Integration Test Addition: Added a new integration test class, GCSSpannerDVWideRowMax1024ColumnsIT, to validate data validation functionality for wide rows containing 1024 columns.
• Validation Scenario: The test simulates a scenario with two records: one perfectly matching between Avro and Spanner, and one with a mismatched value in the 1024th column to verify detection logic.

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[gemini-code-assist]

Code Review

This pull request introduces a new integration test class, GCSSpannerDVWideRowMax1024ColumnsIT, to validate the GCSSpannerDV template's capability to handle wide rows with up to 1024 columns. The test sets up a Spanner table and an Avro schema with 1024 columns, writes a matching record and a mismatched record (diverging at the 1024th column), runs the Dataflow pipeline, and asserts the validation results in BigQuery. There are no review comments, and I have no feedback to provide.