apache/flink · error · UnsupportedOperationException

Unsupported type: {}

Error message

Unsupported type: {}

What it means

Error "Unsupported type: {}" thrown in apache/flink.

Source

Thrown at flink-formats/flink-orc/src/main/java/org/apache/flink/orc/vector/RowDataVectorizer.java:182

                {
                    ListColumnVector listColumnVector = (ListColumnVector) column;
                    setColumn(rowId, listColumnVector, type, row, columnId);
                    break;
                }
            case MAP:
                {
                    MapColumnVector mapColumnVector = (MapColumnVector) column;
                    setColumn(rowId, mapColumnVector, type, row, columnId);
                    break;
                }
            case ROW:
                {
                    StructColumnVector structColumnVector = (StructColumnVector) column;
                    setColumn(rowId, structColumnVector, type, row, columnId);
                    break;
                }
            default:
                throw new UnsupportedOperationException("Unsupported type: " + type);
        }
    }

    private static void setColumn(
            int rowId,
            ListColumnVector listColumnVector,
            LogicalType type,
            RowData row,
            int columnId) {
        ArrayData arrayData = row.getArray(columnId);
        ArrayType arrayType = (ArrayType) type;
        listColumnVector.lengths[rowId] = arrayData.size();
        listColumnVector.offsets[rowId] = listColumnVector.childCount;
        listColumnVector.childCount += listColumnVector.lengths[rowId];
        listColumnVector.child.ensureSize(
                listColumnVector.childCount, listColumnVector.offsets[rowId] != 0);

        RowData convertedRowData = convert(arrayData, arrayType.getElementType());

View on GitHub (pinned to 2f3c205e92)

Solutions

1. Address the cause reported by the error message: Unsupported type: 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 ("Unsupported type: the reported value") and rerun the job or command.

When it happens

Trigger: Triggered at runtime when the operation fails because: Unsupported type: the reported value.

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

AI-assisted analysis of apache/flink@2f3c205e92 (2026-08-14). Data as JSON: /api/errors/e508bcd7c92fe71a. Report an issue: GitHub.