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Failure mode 1: a concurrent statement that collides with DROP COLUMN, and is told so
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captured: 2026-09-16T19:29:03.872467327Z

attempts needed to reproduce the race: 4 of 20
successful reads while DROP COLUMN was in flight: 222
reads that collided with the in-flight DROP COLUMN: 1
example: org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "CUSTOMERS" not found; SQL statement:
SELECT COUNT(*) FROM customers [42102-240]