JFinis commented on code in PR #250:
URL: https://github.com/apache/parquet-format/pull/250#discussion_r1624053258
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src/main/thrift/parquet.thrift:
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@@ -883,13 +928,42 @@ struct ColumnChunk {
/** Encrypted column metadata for this chunk **/
9: optional binary encrypted_column_metadata
+ /**
+ * The column order for this chunk.
+ *
+ * If not set readers should check FileMetadata.column_orders
+ * instead.
+ *
+ * Populated in both PAR1 and PAR3
+ */
+ 10: optional ColumnOrder column_order
+ /** Set to true if all pages in the column chunk are dictionary
+ * encoded
+ */
+ 11: optional bool all_pages_dictionary_encoded
+ /**
+ * The index to the SchemaElement in FileMetadata for this
+ * column.
+ */
+ 12: optional i32 schema_index
Review Comment:
what use case is there for having column chunks be out of order? Wouldn't it
be easier to just specify that the column chunks have to be in the same order
as the schema?
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