12.7. Release 323 (23 Oct 2019)
General Changes
- Fix query failure when referencing columns from a table that contains hidden columns. (#1796)
- Fix a rare issue in which the server produces an extra row containing
the boolean value
trueas the last row in the result set. For most queries, this will result in a client error, since this row does not match the result schema, but is a correctness issue when the result schema is a single boolean column. (#1732) - Allow using
.*on expressions of typeROWin theSELECTclause to convert the fields of a row into multiple columns. (#1017)
JDBC Driver Changes
CLI Changes
- Fix a compatibility issue when connecting to pre-321 servers. (#1785)
Hive Changes
- Fix the ORC writer to correctly write the file footers. Previously written files were sometimes unreadable in Hive 3.1 when querying the table for a second (or subsequent) time. (#456)
- Prevent writing to materialized views. (#1725)
- Reduce metastore load when inserting data or analyzing tables. (#1783, #1793, #1794)
- Allow using multiple Hive catalogs that use different Kerberos or other authentication configurations. (#760, #978, #1820)
PostgreSQL Changes
- Support for PostgreSQL arrays is no longer considered experimental, therefore
the configuration property
postgresql.experimental.array-mappingis now named topostgresql.array-mapping. (#1740)
SPI Changes
- Add support for unnesting dictionary blocks duration compaction. (#1761)
- Change
LazyBlockLoaderto directly return the loaded block. (#1744)
Note
This is a backwards incompatible changes with the previous SPI.
If you have written a plugin that instantiates LazyBlock,
you will need to update your code before deploying this release.