MSQ: Save stack trace when rewriting faults.#19049
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capistrant merged 1 commit intoapache:masterfrom Feb 26, 2026
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ControllerImpl has a function mapQueryColumnNameToOutputColumnName that rewrites faults to use the user-visible column names. However, the current implementation also replaces the exceptionStackTrace. The original trace from the worker is lost, replaced by a not-very-useful one from this function on the controller. This patch changes the function so only the fault is rewritten, not the entire error report, so the original worker stack trace is preserved.
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Area - Batch Ingestion
Area - MSQ
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ControllerImplhas a functionmapQueryColumnNameToOutputColumnNamethat rewrites faults to use the user-visible column names. However, the current implementation also replaces theexceptionStackTrace. The original trace from the worker is lost, replaced by a not-very-useful one from this function on the controller.This patch changes the function so only the fault is rewritten, not the entire error report, so the original worker stack trace is preserved.