v0.11.0

Here we are for a new release of parquet2. This release has 3 main features:

• added optional support LZ4 compression and decompression in WASM builds (via LZ4-flex by @PSeitz)
• added support to read bloom filters
• added support to read and write page indexes

A summary of the Full Changelog is available below.

Thank you for everyone that contributed to this release! (credits to individual PRs below)

Breaking changes:

• Renamed ParquetError to Error #109
• Made .end not consume the parquet FileWriter #127 (jorgecarleitao)
• Removed compression from WriteOptions #125 (kornholi)
• Simplified API and converted some panics on read to errors #112 (jorgecarleitao)
• Improved typing to reduce clones and use of unwraps #106 (jorgecarleitao)
• Simplified PageIterator #103 (jorgecarleitao)

New features:

• Added support for page-level filter pushdown (indexes) #102
• Added support for bloom filters #98
• Added optional support for LZ4 via LZ4-flex crate (thus enabling wasm) #124 (jorgecarleitao)
• Added support for page-level filter pushdown (column and offset indexes) #107 (jorgecarleitao)
• Added support to read column and page indexes #100 (jorgecarleitao)

Fixed bugs:

• Fixed minimum version for LZ4 #122 (kornholi)
• Fixed Lz4Raw compression error (if input is tiny) #118 (dantengsky)
• Fixed LZ4 #95 (jorgecarleitao)

Enhancements:

• Made offsets be always written #123 (jorgecarleitao)
• Added specialized deserialization of one-level filtered pages #120 (jorgecarleitao)
• Added support to read and use bloom filters #99 (jorgecarleitao)
• Added ordinal and total_compressed_size to column meta #96 (jorgecarleitao)
• Added non-consuming function to get values of delta-decoder #94 (jorgecarleitao)
• Disabled bitpacking default-features and upgraded to edition 2021 #93 (light4)

Documentation updates:

• Fix deployment of guide #115 (jorgecarleitao)

Testing updates:

• Added tests for reducing statistics #116 (jorgecarleitao)
• Simplified tests #104 (jorgecarleitao)