============= Release 0.260

.. warning:: There is a concurrency issue in the metric tracking framework in this release which could cause query failures when Alluxio caching is enabled.

.. warning:: optimizer.aggregation-if-to-filter-rewrite-enabled is enabled by default in this release which could cause query failures when the IF branch returns exceptions for rows not meeting the IF condition, e.g, SUM(IF(CARDINALITY(array) > 0, array[1])).

Details

General Changes

Fix a bug in SQL functions that would cause compiler error when session property inline_sql_function is set to false and SQL function references input in lambda expression.
Fix a bug in fragment result cache that caused query failures.
Add :ref:uuid_type type to represent UUIDs.
Add configuration property experimental.aggregation-spill-enabled and session property aggregation_spill_enabled to control aggregate spills explicitly.
Add configuration property experimental.order-by-spill-enabled and session property order_by_spill_enabled to control order by spills explicitly.
Add configuration property experimental.window-spill-enabled and session property window_spill_enabled to control window spills explicitly.
Add configuration property fragment-result-cache.max-single-pages-size to control the max fragement cache file size.
Add session property query_max_revocable_memory_per_node to override existing configuration property experimental.max-revocable-memory-per-node.
Add configuration property optimizer.aggregation-if-to-filter-rewrite-enabled and session property aggregation_if_to_filter_rewrite_enabled to toggle an optimizer rule which improves the performance of IF expressions inside aggregation functions.
Enable join spilling by default when spill is enabled. This can be disabled by setting the configuration property experimental.join-spill-enabled or session property join_spill_enabled to false.

Hive Connector Changes

Add support to create files for empty buckets when writing data. This can be configured by hive.create-empty-bucket-files configuration property or the create_empty_bucket_files session property.

Iceberg Connector Changes

Upgrade Iceberg version to 0.11.1.

Prometheus Connector Changes

Added Prometheus Connector. See :doc:/connector/prometheus

Credits

Andrii Rosa, Ariel Weisberg, Arjun Gupta, Arunachalam Thirupathi, Basar Hamdi Onat, Beinan Wang, Bin Fan, Bin Fan, George Wang, Jack Ye, James Sun, Julian Zhuoran Zhao, Maria Basmanova, Mayank Garg, Rebecca Schlussel, Rongrong Zhong, Shixuan Fan, Timothy Meehan, Zac Wen, Zhan Yuan, Zhenxiao Luo, [email protected], linzebing, shenh062326, superqtqt, v-jizhang, vaishnavibatni