apache/flink · error · IllegalRedistributionModeException

Unexpected Redistribution Mode

Error message

Unexpected Redistribution Mode %s

What it means

Thrown by StreamUtils.validateStates when a state declaration requests a redistribution mode that is not in the allowed set for this operator position — the switch/branch over redistribution modes encounters an unexpected enum constant. The '{value}'-style literal indicates the offending mode comes from the invalidStateDeclarations set passed by the caller.

Solutions

1. Address the cause reported by the error message: Unexpected Redistribution Mode the reported value
2. Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry.

Example fix

Correct the condition described ("Unexpected Redistribution Mode the reported value") and rerun the job or command.

When it happens

Trigger: Triggered at runtime when the operation fails because: Unexpected Redistribution Mode the reported value.

Common situations: Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Unexpected Redistribution Mode the reported value.

AI-assisted analysis of apache/flink@2f3c205e92 (2026-08-14). Data as JSON: /api/errors/1cabb3d4f4716441. Report an issue: GitHub.

Appendix: source

Thrown at flink-datastream/src/main/java/org/apache/flink/datastream/impl/utils/StreamUtils.java:591

        return new ProcessConfigurableAndKeyedPartitionStreamImpl<>(stream);
    }

    /** Wrap a {@link GlobalStreamImpl} with configure handle. */
    public static <T> ProcessConfigurableAndGlobalStream<T> wrapWithConfigureHandle(
            GlobalStreamImpl<T> stream) {
        return new ProcessConfigurableAndGlobalStreamImpl<>(stream);
    }

    /** Wrap a {@link GlobalStreamImpl} with configure handle. */
    public static void validateStates(
            Set<StateDeclaration> inputStateDeclarations,
            Set<StateDeclaration.RedistributionMode> invalidStateDeclarations) {
        inputStateDeclarations.stream()
                .map(StateDeclaration::getRedistributionMode)
                .forEach(
                        mode -> {
                            if (invalidStateDeclarations.contains(mode)) {
                                throw new IllegalRedistributionModeException(mode);
                            }
                        });
    }
}

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