Release Notes for MariaDB Enterprise ColumnStore 6.4.1
This page is part of MariaDB's MariaDB Documentation.
The parent of this page is: Release Notes for MariaDB Enterprise ColumnStore 6
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MariaDB Enterprise ColumnStore 6.4.1 is a maintenance release of MariaDB Enterprise ColumnStore. MariaDB Enterprise ColumnStore is a columnar storage engine included with MariaDB Enterprise Server. This is the fifth release in the Enterprise ColumnStore 6 series.
MariaDB Enterprise ColumnStore 6.4.1 was released on 2022-07-12. This release is of General Availability (GA) maturity.
This release of MariaDB Enterprise ColumnStore is included with MariaDB Enterprise Server 10.6.8-4.
ColumnStore has optimized the storage and usage of the Extent Map to improve scalability. (MCOL-4917)
The Extent Map is now stored as a red-black tree instead of a linear array.
The Extent Map's new data structure provides optimizations for many operations.
mcsRebuildEMutility now supports both the ColumnStore Object Storage Topology and the ColumnStore Shared Local Storage Topology. (MCOL-5106)
mcsRebuildEMutility now calculates the high water mark for system catalog files. (MCOL-5131)
ColumnStore now includes Cluster Management API (CMAPI) 6.4.1.
Can result in a hang or crash
ColumnStore's systemd unit files use startup and shutdown timeouts that are too low, which can lead to race conditions during startup and shutdown. (MCOL-4775, MCOL-4867, MCOL-5105)
The race conditions could cause the Extent Map to become corrupt.
The race conditions could also cause the
DMLProcprocess to repeatedly try to rollback the same transactions in a crash loop.
When a recursive CTE is executed with a ColumnStore table, the server crashes. (MCOL-4778)
Starting with this release, when a recursive CTE is executed with a ColumnStore table, the
ER_CHECK_NOT_IMPLEMENTEDerror code is raised to the client with the following message:
ERROR 1178 (42000): The storage engine for the table doesn't support Recursive CTE
When a disk-based JOIN is executed,
ExeMgrcan crash. (MCOL-5042)
Can Result in unexpected behavior
Related to install and upgrade
Internal installation scripts refer to legacy OAM components and can break some installations. (MCOL-5060)
In alignment to the enterprise lifecycle, MariaDB Enterprise ColumnStore 6.4.1 is provided for:
CentOS 7 (x86_
Debian 10 (x86_
Red Hat Enterprise Linux 7 (x86_
Red Hat Enterprise Linux 8 (x86_
Rocky Linux 8 (x86_
Ubuntu 18.04 (x86_
Ubuntu 20.04 (x86_
MariaDB Enterprise ColumnStore 6 has been superseded by MariaDB Enterprise ColumnStore 22.08 in MariaDB Enterprise Server 10.6.