V4.0.29 Release Notes - Hologres - Alibaba Cloud Documentation Center

This topic describes the enhancements and bug fixes in Hologres V4.0.29.

Enhancements

Simplified permissions for refreshing dynamic tables: Users with DML permission on a dynamic table can now refresh it. Previously, this action was restricted to the table owner.

Severity	Title	Description	Affected versions	Workaround
P2	Fixed an error when scaling concurrency for foreign tables that use bucket shuffle.	Scaling the concurrency for a foreign table that uses bucket shuffle caused the `buckets must be provided for bucket partition function` error.	V4.0 and later	Do not use bucket shuffle for foreign tables.
P2	Fixed an error when enabling a dynamic row group.	A dynamic row group could not be enabled if the specified row group size was not a power of two.	V4.0	Use a row group size that is a power of two.
P2	Fixed an incorrect evaluation caused by an empty histogram.	The `FUsedColumnsWellDefined` function incorrectly returned true for an empty histogram.	V1.1 and later	None.
P2	Fixed a coredump caused by the adaptive planner accessing empty statistics.	In exceptional scenarios, the adaptive planner caused a coredump when it accessed empty statistics.	V3.1 and later	None.