#780 feat: add NonRecoverableError to skip retries on terminal failures Pull request opened by AdilFayyaz Motivation Tasks with retries would always exhaust all attempts even for failures that are definitively terminal (e.g. invalid input, permanent downstream unavailability). Users had no way to signal "do not retry this." Summary • Add NonRecoverableError(RuntimeUserError) to flyte.errors — raise it inside a task to skip all remaining retries • Extend the Error dataclass with a recoverable: bool = True field; convert_from_native_to_error() sets it False for NonRecoverableError • upload_error() now maps recoverable=False → ContainerError.NON_RECOVERABLE, telling the engine to skip retries • Local controller retry loop breaks early when err.recoverable is False; _bin/runtime.py safety-net handler extended to also catch RuntimeUserError Test Plan • uv run pytest tests/flyte/internal/bin/test_runtime.py -v — includes new test_non_recoverable_error_sets_kind asserting ContainerError.NON_RECOVERABLE is set • Run example: uv run python examples/basics/non_recoverable_error.py • Confirm on the UI how many retries take place with a NonRecoverableError error type. flyteorg/flyte-sdk