Weekly Plan: Andrew Lamb 2025-05-26

[alamb]

This is my plan this week for reviews, etc. I am putting it here to make it visible and keep myself organized

I am very much focused on the following projects

• [EPIC] Faster performance for parquet predicate evaluation for non selective filters arrow-rs#7456 with @zhuqi-lucas (to enable filter_pushdown Enable parquet filter pushdown by default #3463)
• Parquet Variant: Merge initial read API in Foundation of API for reading Variant data and metadata arrow-rs#7535 from @mkarbo and @scovich
• Parquet Variant: follow up tasks / start working on the Write / Builder API

I hope to push along the following

• DataFusion Feature: merge async user defined functions and file follow up with @goldmedal Introduce Async User Defined Functions  #14837
• DataFusion performance: reduce the size of Expr and rerun benchmarks Reduce size of Expr struct #14366 / Reduce size of Expr struct #16199

Stretch Goals

• DataFusion Feature: Update example of using multiple threadpools with object store Example for using a separate threadpool for CPU bound work (try 2) #14286 (comment)
• DataFusion perf script from @logan-keede : Shell script to collect benchmarks for multiple versions #15144
• DataFusion perf script draft: feat(benchmark): collect benchmarks for last 5 versions in line protocol format #15846
• DataFusion PR about pruning ordering: pipe column orderings into pruning predicate creation #15821

Nice to have (really would be great to have someone help review):

• DataFusion: Aggregate UDFs in FFI: feat: Add Aggregate UDF to FFI crate #14775
• Arrow: Avro cleanup: Avro codec enhancements arrow-rs#6965