Parquet Dotnet Versions Save

Improved string handling

Bugfix release. Thanks to @CurtHagenlocher and @corrego for making it happen!

• ParquetReader.OpenFromFile is not closing the file after calling Dispose() (#407)
• Large groups with timestamp data are not read correctly (#400)
• Serializing Class with DateTime Property Fails via ParquetConvert.Serialize() (#369)
• Bad Boolean Serialization (#394)
• Bitpacked page boundary fix (#382)

Unfortunately parquet format doesn't allow to distinguish between an empty list and a list with one null element. This fix makes parquet-net behaviour similar to the parquet-mr. (#398)

add extra check for array boundaries in RLE (#396)

Fix unix days adjustment (#386). For some reason we used +/- 1 day adjustment on read/write which works fine internally but shifts time to wrong day.

• Exposing internal thrift metadata
• Ability to decode parquet statistics
• parq "meta" command shows internal statistics

Fix for issue #337 (DateTimeFormat is not handled properly)

bug fixed: ParquetConverter to append to ParquetWriter in chunks

• bug fixed: multiple nesting levels were not correctly read by row-based helpers (#363)
• bug fixed: Equals method on Row didn't compare list elements correctly (#361)
• bug fixed: multi-page columns were not read to end if their order is not what parquet-dotnet expects (#370)

• POCO serialiser support for repeatable fields POCO (#358)
• --max-rows 10 not honored by PARQ Global Tool 📺 (#357)
• Failure to read columns if data page is larger than it should be (supposably padded by Spark) 🐛 (#330)
• Limit number of rows printed by parq. By default only show the first 10 rows in PARQ Global Tool 📺 (#351)