{"record":{"id":"8316ab6dd1009002","repo":"apache/flink","slug":"required-column-is-missing-in-data-file-col","errorCode":null,"errorMessage":"Required column is missing in data file. Col: {}","messagePattern":"Required column is missing in data file\\. Col: (.+?)","errorType":"exception","errorClass":"IOException","httpStatus":null,"severity":"error","filePath":"flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/ParquetVectorizedInputFormat.java","lineNumber":265,"sourceCode":"            throw new RuntimeException(\n                    \"The quality of field type is incompatible with the request schema!\");\n        }\n\n        /*\n         * Check that the requested schema is supported.\n         */\n        for (int i = 0; i < requestedSchema.getFieldCount(); ++i) {\n            String[] colPath = requestedSchema.getPaths().get(i);\n            if (fileSchema.containsPath(colPath)) {\n                ColumnDescriptor fd = fileSchema.getColumnDescription(colPath);\n                if (!fd.equals(requestedSchema.getColumns().get(i))) {\n                    throw new UnsupportedOperationException(\"Schema evolution not supported.\");\n                }\n            } else {\n                if (requestedSchema.getColumns().get(i).getMaxDefinitionLevel() == 0) {\n                    // Column is missing in data but the required data is non-nullable. This file is\n                    // invalid.\n                    throw new IOException(\n                            \"Required column is missing in data file. Col: \"\n                                    + Arrays.toString(colPath));\n                }\n            }\n        }\n    }\n\n    private Pool<ParquetReaderBatch<T>> createPoolOfBatches(\n            SplitT split, MessageType requestedSchema, int numBatches) {\n        final Pool<ParquetReaderBatch<T>> pool = new Pool<>(numBatches);\n\n        for (int i = 0; i < numBatches; i++) {\n            pool.add(createReaderBatch(split, requestedSchema, pool.recycler()));\n        }\n\n        return pool;\n    }\n","sourceCodeStart":247,"sourceCodeEnd":283,"githubUrl":"https://github.com/apache/flink/blob/2f3c205e9266cb30240eb7f4fdab15cad629a70f/flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/ParquetVectorizedInputFormat.java#L247-L283","documentation":"Error \"Required column is missing in data file. Col: {}\" thrown in apache/flink.","triggerScenarios":"Triggered at runtime when the operation fails because: Required column is missing in data file. Col: the reported value.","commonSituations":"Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Required column is missing in data file. Col: the reported value.","solutions":["Address the cause reported by the error message: Required column is missing in data file. Col: the reported value","Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry."],"exampleFix":"Correct the condition described (\"Required column is missing in data file. Col: the reported value\") and rerun the job or command.","handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"2f3c205e9266cb30240eb7f4fdab15cad629a70f","analyzedAt":"2026-08-14T08:48:24.518Z","schemaVersion":2},"datasetVersion":"2026-08-14T10:17:34.591Z"}