apache/flink · error · UnsupportedOperationException

Partition sorting does not support type {} yet.

Error message

Partition sorting does not support type {} yet.

What it means

Error "Partition sorting does not support type {} yet." thrown in apache/flink.

Source

Thrown at flink-core/src/main/java/org/apache/flink/api/common/operators/base/SortPartitionOperatorBase.java:84

    @Override
    protected List<IN> executeOnCollections(
            List<IN> inputData, RuntimeContext runtimeContext, ExecutionConfig executionConfig) {

        TypeInformation<IN> inputType = getInput().getOperatorInfo().getOutputType();

        int[] sortColumns = this.partitionOrdering.getFieldPositions();
        boolean[] sortOrderings = this.partitionOrdering.getFieldSortDirections();

        final TypeComparator<IN> sortComparator;
        if (inputType instanceof CompositeType) {
            sortComparator =
                    ((CompositeType<IN>) inputType)
                            .createComparator(sortColumns, sortOrderings, 0, executionConfig);
        } else if (inputType instanceof AtomicType) {
            sortComparator =
                    ((AtomicType) inputType).createComparator(sortOrderings[0], executionConfig);
        } else {
            throw new UnsupportedOperationException(
                    "Partition sorting does not support type " + inputType + " yet.");
        }

        Collections.sort(
                inputData,
                new Comparator<IN>() {
                    @Override
                    public int compare(IN o1, IN o2) {
                        return sortComparator.compare(o1, o2);
                    }
                });

        return inputData;
    }
}

View on GitHub (pinned to 2f3c205e92)

Solutions

1. Address the cause reported by the error message: Partition sorting does not support type the reported value yet.
2. Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry.

Example fix

Correct the condition described ("Partition sorting does not support type the reported value yet.") and rerun the job or command.

When it happens

Trigger: Triggered at runtime when the operation fails because: Partition sorting does not support type the reported value yet.

Common situations: Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Partition sorting does not support type the reported value yet.

AI-assisted analysis of apache/flink@2f3c205e92 (2026-08-14). Data as JSON: /api/errors/b5e83813642179c4. Report an issue: GitHub.