apache/flink · error · RuntimeException

Unsupported operation

Error message

Unsupported operation

What it means

Error "Unsupported operation" thrown in apache/flink.

Source

Thrown at flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/vector/reader/ParquetDataColumnReaderFactory.java:110

        @Override
        public float readFloat(int id) {
            return dict.decodeToFloat(id);
        }

        @Override
        public double readDouble() {
            return valuesReader.readDouble();
        }

        @Override
        public double readDouble(int id) {
            return dict.decodeToDouble(id);
        }

        @Override
        public TimestampData readTimestamp() {
            throw new RuntimeException("Unsupported operation");
        }

        @Override
        public TimestampData readTimestamp(int id) {
            throw new RuntimeException("Unsupported operation");
        }

        @Override
        public int readInteger() {
            return valuesReader.readInteger();
        }

        @Override
        public int readInteger(int id) {
            return dict.decodeToInt(id);
        }

        @Override

View on GitHub (pinned to 2f3c205e92)

Solutions

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

Example fix

Correct the condition described ("Unsupported operation") and rerun the job or command.

When it happens

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

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

AI-assisted analysis of apache/flink@2f3c205e92 (2026-08-14). Data as JSON: /api/errors/29f876645d0838d3. Report an issue: GitHub.