pitrou commented on code in PR #242: URL: https://github.com/apache/parquet-format/pull/242#discussion_r1603200707
########## README.md: ########## @@ -113,6 +119,55 @@ chunks they are interested in. The columns chunks should then be read sequentia  +### Parquet 3 + +Parquet 3 files have the following overall structure: + +``` +4-byte magic number "PAR1" +4-byte magic number "PAR3" +8-byte offset of File Metadata v3 +8-byte length of File Metadata v3 + +<Column 1 Chunk 1 + Column Metadata> +<Column 2 Chunk 1 + Column Metadata> +... +<Column N Chunk 1 + Column Metadata> +<Column 1 Chunk 2 + Column Metadata> +<Column 2 Chunk 2 + Column Metadata> +... +<Column N Chunk 2 + Column Metadata> +... +<Column 1 Chunk M + Column Metadata> +<Column 2 Chunk M + Column Metadata> +... +<Column N Chunk M + Column Metadata> + +<File-level Column 1 Metadata v3> +... +<File-level Column N Metadata v3> Review Comment: It's not removed (see Thrift additions). It's absent from this drawing just like it's absent from the original one above :-) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
