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General
Fix date_format function failure when format string contains non-ASCII
characters. (#1056 )
Improve performance of queries using UNNEST. (#901 )
Improve error message when statement parsing fails. (#1042 )
CLI
Fix refresh of completion cache when catalog or schema is changed. (#1016 )
Allow reading password from console when stdout is a pipe. (#982 )
Hive connector
Acquire S3 credentials from the default AWS locations if not configured explicitly. (#741 )
Only allow using roles and grants with SQL standard based authorization. (#972 )
Add support for CSV file format. (#920 )
Support reading from and writing to Hadoop encryption zones (Hadoop KMS). (#997 )
Collect column statistics on write by default. This can be disabled using the
hive.collect-column-statistics-on-write configuration property or the
collect_column_statistics_on_write session property. (#981 )
Eliminate unused idle threads when using the metastore cache. (#1061 )
PostgreSQL connector
Add support for columns of type UUID. (#1011 )
Export JMX statistics for various JDBC and connector operations. (#906 ).
MySQL connector
Export JMX statistics for various JDBC and connector operations. (#906 ).
Redshift connector
Export JMX statistics for various JDBC and connector operations. (#906 ).
SQL Server connector
Export JMX statistics for various JDBC and connector operations. (#906 ).
TPC-H connector
Fix SHOW TABLES failure when used with a hidden schema. (#1005 )
TPC-DS connector
Fix SHOW TABLES failure when used with a hidden schema. (#1005 )
SPI
Add support for pushing simple column and row field reference expressions into
connectors via the ConnectorMetadata.applyProjection() method. (#676 )