{"record":{"id":"070732c34057247b","repo":"apache/flink","slug":"could-not-read-page-in-col-s-because-the-dictiona","errorCode":null,"errorMessage":"Could not read page in col %s because the dictionary was missing for encoding %s.","messagePattern":"Could not read page in col (.+?) because the dictionary was missing for encoding (.+?)\\.","errorType":"exception","errorClass":"IOException","httpStatus":null,"severity":"error","filePath":"flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/vector/reader/NestedPrimitiveColumnReader.java","lineNumber":499,"sourceCode":"                        return null;\n                    }\n\n                    @Override\n                    public Void visit(DataPageV2 dataPageV2) {\n                        readPageV2(dataPageV2);\n                        return null;\n                    }\n                });\n    }\n\n    private void initDataReader(Encoding dataEncoding, ByteBufferInputStream in, int valueCount)\n            throws IOException {\n        this.pageValueCount = valueCount;\n        this.endOfPageValueCount = valuesRead + pageValueCount;\n        if (dataEncoding.usesDictionary()) {\n            this.dataColumn = null;\n            if (dictionary == null) {\n                throw new IOException(\n                        String.format(\n                                \"Could not read page in col %s because the dictionary was missing for encoding %s.\",\n                                descriptor, dataEncoding));\n            }\n            dataColumn =\n                    ParquetDataColumnReaderFactory.getDataColumnReaderByType(\n                            type.asPrimitiveType(),\n                            dataEncoding.getDictionaryBasedValuesReader(\n                                    descriptor, VALUES, dictionary.getDictionary()),\n                            isUtcTimestamp);\n            this.isCurrentPageDictionaryEncoded = true;\n        } else {\n            dataColumn =\n                    ParquetDataColumnReaderFactory.getDataColumnReaderByType(\n                            type.asPrimitiveType(),\n                            dataEncoding.getValuesReader(descriptor, VALUES),\n                            isUtcTimestamp);\n            this.isCurrentPageDictionaryEncoded = false;","sourceCodeStart":481,"sourceCodeEnd":517,"githubUrl":"https://github.com/apache/flink/blob/2f3c205e9266cb30240eb7f4fdab15cad629a70f/flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/vector/reader/NestedPrimitiveColumnReader.java#L481-L517","documentation":"Fires in initDataReader when a page uses dictionary encoding but the reader's dictionary is null (dictionary page missing or unread). The column's encoded values cannot be resolved to actual values, so page reading fails with the encoding and column descriptor reported.","triggerScenarios":"Triggered at runtime when the operation fails because: Could not read page in col the reported value because the dictionary was missing for encoding the reported value.","commonSituations":"Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Could not read page in col the reported value because the dictionary was missing for encoding the reported value.","solutions":["Address the cause reported by the error message: Could not read page in col the reported value because the dictionary was missing for encoding the reported value.","Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry."],"exampleFix":"Correct the condition described (\"Could not read page in col the reported value because the dictionary was missing for encoding the reported value.\") and rerun the job or command.","handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"2f3c205e9266cb30240eb7f4fdab15cad629a70f","analyzedAt":"2026-08-14T08:48:24.518Z","contentChangedAt":"2026-08-14T08:48:24.518Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}