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# blaze-v2.0.8 | ||
# blaze-v2.0.9 | ||
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## Features | ||
* Enables nested complex data types by default. | ||
* Supports writing parquet table with dynamic partitions. | ||
* Supports partial aggregate skipping. | ||
* Enable first() aggregate function converting. | ||
* Add spill metrics. | ||
* | ||
* Upgrades datafusion/arrow dependency version to v36/v50. | ||
* Supports max/min aggregation with complex types. | ||
* Supports json_tuple. | ||
* Introduce sonic-rs for json parsing. | ||
* Add stage id in operator metrics. | ||
* Implements writing table with dynamic partitions (not tested in spark303/spark333). | ||
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## Performance | ||
* Implement batch updating/merging in aggregates. | ||
* Use slim box for storing bytes. | ||
* get_json_object use Cow to avoid copying. | ||
* Reduce the probability of unexpected off-heap memory overflows. | ||
* Introduce multiway merge sort to SortExec and SortRepartitioner. | ||
* SortExec removes redundant columns from batch. | ||
* Implement loser tree with inlined comparable traits. | ||
* Use unchecked index in LoserTree to get slightly performance improvement. | ||
* Remove BucketRepartitioner. | ||
* Reduce number of awaits in sort-merge join. | ||
* Pre-merge records in sorting mode if cardinality is low. | ||
* Use gxhash as default hasher in AggExec. | ||
* Optimize collect_set/collect_list function with SmallVec. | ||
* Implement async ipc reader. | ||
* Improves batch serialization format and reduce compressed size. | ||
* Implements radix-based k-way merging used in shuffling and aggregating. | ||
* Improves performance of on-heap spilling. | ||
* Improves performance of SortExec. | ||
* Improves performance of AggExec. | ||
* Improves performance of collect_set/collect_list. | ||
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## Bugfix | ||
* Fix buggy GetArrayItem/GetMapValue native converter pattern matching. | ||
* Fix parquet pruning with NaN values. | ||
* Fix map type conversion with incorrect nullable value. | ||
* Fix ffi-export error in some cases. | ||
* Fix incorrect behavior of get_index_field with incorrect number of rows. | ||
* Fix task hanging in some cases with ffi-export. | ||
* Fix concat_ws with empty batches. | ||
* Fix spark333 RenameExec incorrect ordering expressions. | ||
* Fix incorrect join type mapping in BroadcastNestedLoopJoin. | ||
* Fix decimal dividing with zero. |
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