presto
https://github.com/prestodb/presto
Java
The official home of the Presto distributed SQL query engine for big data
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- Issues
- Implement Parquet bloom filter
- Initial AQE Hack
- Optimize filter condition with CASE predicate - handle null cases
- Multiple sql functions called on arrays from table scans fail
- Time Travel (querying the historical versions of data) ability for Hudi Table
- There are too many hive metastore getPartition requests when CachingHiveMetastore set partitionCacheRefreshMills
- Dynamic Filtering pushdown can only pushdown filters for certain joins
- [Hint]Resolve redundant off-heap memory used
- presto-pinot: Support pushdown of dynamic filters in pinot
- Memory footprint
- Docs
- Java not yet supported