Release 306 (16 Mar 2019)#
General#
Fix planning failure for queries containing a
LIMIT
after a global aggregation. (#437)Fix missing column types in
EXPLAIN
output. (#328)Fix accounting of peak revocable memory reservation. (#413)
Fix double memory accounting for aggregations when spilling is active. (#413)
Fix excessive CPU usage that can occur when spilling for window functions. (#468)
Fix incorrect view name displayed by
SHOW CREATE VIEW
. (#433)Allow specifying
NOT NULL
when creating tables or adding columns. (#418)Add a config option (
query.stage-count-warning-threshold
) to specify a per-query threshold for the number of stages. When this threshold is exceeded, aTOO_MANY_STAGES
warning is raised. (#330)Support session property values with special characters (e.g., comma or equals sign). (#407)
Remove the
deprecated.legacy-unnest-array-rows
configuration option. The legacy behavior forUNNEST
of arrays containingROW
values is no longer supported. (#430)Remove the
deprecated.legacy-row-field-ordinal-access
configuration option. The legacy mechanism for accessing fields of anonymousROW
types is no longer supported. (#428)Remove the
deprecated.group-by-uses-equal
configuration option. The legacy equality semantics forGROUP BY
are not longer supported. (#432)Remove the
deprecated.legacy-map-subscript
. The legacy behavior for the map subscript operator on missing keys is no longer supported. (#429)Remove the
deprecated.legacy-char-to-varchar-coercion
configuration option. The legacy coercion rules betweenCHAR
andVARCHAR
types are no longer supported. (#431)Remove deprecated
distributed_join
system property. Usejoin_distribution_type
instead. (#452)
Hive connector#
MySQL connector#
Allow creating or renaming tables, and adding, renaming, or dropping columns. (#418)
PostgreSQL connector#
Redshift connector#
Allow creating or renaming tables, and adding, renaming, or dropping columns. (#418)
SQL Server connector#
Allow creating or renaming tables, and adding, renaming, or dropping columns. (#418)
Base-JDBC connector library#
Allow mapping column type to Presto type based on
Block
. (#454)
SPI#
Deprecate Table Layout APIs. Connectors can opt out of the legacy behavior by implementing
ConnectorMetadata.usesLegacyTableLayouts()
. (#420)Add support for limit pushdown into connectors via the
ConnectorMetadata.applyLimit()
method. (#421)Add time spent waiting for resources to
QueryCompletedEvent
. (#461)