Release 326 (27 Nov 2019)#
General#
- Fix incorrect query results when query contains - LEFT JOINover- UNNEST. (#2097)
- Fix performance regression in queries involving - JOIN. (#2047)
- Fix accounting of semantic analysis time when queued queries are cancelled. (#2055) 
- Add SingleStore connector. (#1906) 
- Improve performance of - INSERTand- CREATE TABLE ... ASqueries containing redundant- ORDER BYclauses. (#2044)
- Improve performance when processing columns of - maptype. (#2015)
Server RPM#
- Allow running Presto with Java 11 or above. (#2057) 
Security#
- Deprecate Kerberos in favor of JWT for Secure internal communication. (#2032) 
Hive#
- Fix table creation error for tables with S3 location when using - filemetastore. (#1664)
- Fix a compatibility issue with the CDH 5.x metastore which results in stats not being recorded for ANALYZE. (#973) 
- Improve performance for Glue metastore by fetching partitions in parallel. (#1465) 
- Improve performance of - sql-standardsecurity. (#1922, #1929)
Phoenix connector#
- Collect statistics on the count and duration of each call to Phoenix. (#2024) 
Other connectors#
These changes apply to the MySQL, PostgreSQL, Redshift, and SQL Server connectors.