Release 0.104#
General#
- Handle thread interruption in StatementClient. 
- Fix CLI hang when server becomes unreachable during a query. 
- Add - covar_pop(),- covar_samp(),- corr(),- regr_slope(), and- regr_intercept()functions.
- Fix potential deadlock in cluster memory manager. 
- Add a visualization of query execution timeline. 
- Allow mixed case in input to - from_hex().
- Display “BLOCKED” state in web UI. 
- Reduce CPU usage in coordinator. 
- Fix excess object retention in workers due to long running queries. 
- Reduce memory usage of - array_distinct().
- Add optimizer for projection push down which can improve the performance of certain query shapes. 
- Improve query performance by storing pre-partitioned pages. 
- Support - TIMESTAMPfor- first_value(),- last_value(),- nth_value(),- lead()and- lag().
Hive#
- Upgrade to Parquet 1.6.0. 
- Collect request time and retry statistics in - PrestoS3FileSystem.
- Fix retry attempt counting for S3.