Release Notes for MariaDB ColumnStore 1.5.2
MariaDB ColumnStore is a columnar storage engine for MariaDB Server.
This release of MariaDB ColumnStore is included with MariaDB Community Server 10.5.4.
MariaDB ColumnStore 1.5.2 was released on 2020-06-24. It is the first release in the MariaDB ColumnStore 1.5 series. It is a beta release.
Comprehensive rewrite of installation and administration logic. (MCOL-3836)
mcsadminhas been removed. Instead, ColumnStore 1.5 uses
mariadb-columnstoreis used to manage ColumnStore's processes.
See OAM Replacement for more details.
Support for standard MariaDB Community Server collation and character sets. (MCOL-337)
Improved performance for
Fixes for defects in tiered storage and S3-compatible object storage.
Support to set up
tempfiles.dto prevent the OS from flushing
/tmpon reboot. (MCOL-2101)
Support for faster replication-slave processing. (MCOL-3835)
Creates a systemd unit file for the MariaDB ColumnStore service. (MCOL-3914)
Implements REST API server. (MCOL-3921)
Merges 3 MariaDB ColumnStore packages into a single package. (MCOL-3991)
systemlangto an unrecognized string now causes MariaDB ColumnStore to not start up. (MCOL-3420)
COLLATEin DDL and
ORDER BYclauses. (MCOL-3862)
Improvements in failover design. (MCOL-3886)
loadbrm process rewritten in Python (
mcs-loadbrm.py). Now requires Python 3 as a dependency.
Fixes DNS error
MessageQueueClient :: setup (): unknown name or service - ExeMgr = unassigned(MCOL-2181)
Fixes truncation during updates causing the Server to assert. (MCOL-3749)
Fixes issue where the same erroneous statement returns a different error other run. (MCOL-3777)
GROUP BYordering error:
IDB-2021: 'ref_genome' is not in GROUP BY clause(MCOL-3782)
Fixes MariaDB asserts when connection is closed. (MCOL-3812)
Fixes incorrect counts in views. (MCOL-3813)
Fixes issue in
UNIONoperations about table not being in query. (MCOL-3828)
Fixes issue where
systemctl cat mariadb.serviceis not working on all systems. (MCOL-3830)
Fixes Server aborting when
Columnstore.xmlis missing. (MCOL-3853)
Fixes issue where renaming table causes schema to go out of sync. (MCOL-3859)
Fixes intermittent cpimport crashes. (MCOL-3865)
Fixes fails in
Fixes error message pointing to wrong function. (MCOL-3924)
Fixes memory leak in XML parser. (MCOL-3934)
Fixes issue using
Fixes mishandling of multi-byte characters in DML export to cpimport-1.5. (MCOL-4017)
Fixes window function issues due to 1.4 returning results where 1.2 returns errors. (MCOL-3856)
Fixes cpimport S3 multi-PM usage. (MCOL-3861)
In alignment to the MariaDB Corporation Engineering Policy, MariaDB ColumnStore 1.5.2 is provided for:
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 7
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server 12
MariaDB ColumnStore 1.5 has been superseded by MariaDB ColumnStore 5. For installation and upgrade instructions, see "Deploy".