emkornfield commented on code in PR #248:
URL: https://github.com/apache/parquet-format/pull/248#discussion_r1618916332
##########
src/main/thrift/parquet.thrift:
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@@ -833,6 +832,9 @@ struct ColumnMetaData {
* filter pushdown.
*/
16: optional SizeStatistics size_statistics;
+
+ /* The index into FileMetadata.schema (list<SchemaElement>) for this column
*/
+ 17: optional i32 schema_index;
Review Comment:
Just to be clear this would be a future optimization to drop columns that
are completely null?
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