Include partition column in backfill sharding key shared example
What does this MR do and why?
We support the background migration super class with a partition_column
if the background migration is run on a partitioned table. This MR updates the shared example spec to accommodate the spec change.
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
Screenshots or screen recordings
NA
How to set up and validate locally
- No UI change.
- Pipeline should be
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