Release Notes for MariaDB Xpand 6.0.6
This page is part of MariaDB's Documentation.
The parent of this page is: Release Notes for MariaDB Xpand 6.0
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Overview
MariaDB Xpand is a distributed SQL database.
MariaDB Xpand 6.0.6 was released on 2022-12-08.
Notable Changes
Added the
rebalancer_rebalance_mode
global variable to control the Xpand Rebalancer swapping behavior. (XPT-326)When
rebalancer_rebalance_mode="normal"
is set (the default), the rebalancer will swap slices between nodes to improve data distribution.When
rebalancer_rebalance_mode="noswap"
is set, the rebalancer will move slices to even out distribution, but will not swap slices between nodes.
Added support for
ALTER TABLE... RENAME COLUMN
syntax to rename a column. (XPT-504)This
ALTER TABLE
operation is instant. It only requires the table's metadata to change, which allows the operation to complete instantly without rebuilding the table.The column being renamed cannot be modified by another
ALTER
specification within the sameALTER
statement.
Issues Fixed
Can result in data loss
The number of healthy replicas and healthy zones for binlog segments is computed incorrectly. This can break replication with the error: (XPT-457)
Binlog's segment is inaccessible.
Can result in unexpected behavior
When softfailing a majority of nodes, binlog reprotection does not complete during softfail.