12.76. Release 0.175
General Changes
- Fix “position is not valid” query execution failures.
- Fix memory accounting bug that can potentially cause
OutOfMemoryError.
- Fix regression that could cause certain queries involving
UNION and
GROUP BY or JOIN to fail during planning.
- Fix planning failure for
GROUP BY queries containing correlated
subqueries in the SELECT clause.
- Fix execution failure for certain
DELETE queries.
- Reduce occurrences of “Method code too large” errors.
- Reduce memory utilization for certain queries involving
ORDER BY.
- Improve performance of map subscript from O(n) to O(1) when the map is
produced by an eligible operation, including the map constructor and
Hive readers (except ORC and optimized Parquet). More read and write
operations will take advantage of this in future releases.
- Add
enable_intermediate_aggregations session property to enable the
use of intermediate aggregations within un-grouped aggregations.
- Add support for
INTERVAL data type to avg() and sum() aggregation functions.
- Add support for
INT as an alias for the INTEGER data type.
- Add resource group information to query events.
Hive Changes
- Make table creation metastore operations idempotent, which allows
recovery when retrying timeouts or other errors.
MongoDB Changes
- Rename
mongodb.connection-per-host config option to mongodb.connections-per-host.
