> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/release-notes/columnstore/23.10/23.10.4.md).

# MariaDB ColumnStore 23.10.4 Release Notes

### Overview

MariaDB ColumnStore 23.10.4 is a maintenance release of MariaDB ColumnStore. MariaDB ColumnStore is a columnar storage engine included with MariaDB Enterprise Server.

MariaDB ColumnStore 23.10.4 was released on 19 May 2025. This release is of General Availability (GA) maturity. MariaDB ColumnStore 23.10.4 is a GA release in the 23.10 series.

This release of MariaDB ColumnStore is included with MariaDB Enterprise Server 10.6.21-17.

### Notable Changes

* New memory consumption accounting mechanism to prevent OOM events-related crashes. ([MCOL-5797](https://jira.mariadb.org/browse/MCOL-5797))
* FROM\_UNIXTIME(negativeDecimal) not behaving as InnoDB ([MCOL-4605](https://jira.mariadb.org/browse/MCOL-4605))
* SEC\_TO\_TIME(wideDecimal) returns 0 in DECIMAL context ([MCOL-4607](https://jira.mariadb.org/browse/MCOL-4607))
* MOD loses precision on huge narrow decimal ([MCOL-4611](https://jira.mariadb.org/browse/MCOL-4611))
* Different results compared to innodb with union all and subselect with null in select and impossible where condition ([MCOL-4942](https://jira.mariadb.org/browse/MCOL-4942))
* cmapi support for log collection ([MCOL-5300](https://jira.mariadb.org/browse/MCOL-5300))
* JSON\_ARRAYAGG in MCS works differently than in InnoDB. ([MCOL-5394](https://jira.mariadb.org/browse/MCOL-5394))
* CLI Startup - Single start command for Single Node ([MCOL-5525](https://jira.mariadb.org/browse/MCOL-5525))
* Alias "mcs CLUSTER" commands to just mcs ([MCOL-5526](https://jira.mariadb.org/browse/MCOL-5526))
* Cmapi (mcs cli) support for columnstore backups ([MCOL-5618](https://jira.mariadb.org/browse/MCOL-5618))
* Improve Client Error Messaging and async broadcasting config. ([MCOL-5638](https://jira.mariadb.org/browse/MCOL-5638))
* CTE/aggregation function give wrong results ([MCOL-5842](https://jira.mariadb.org/browse/MCOL-5842))
* DROP TABLE IF EXISTS should not generate errors for non existing tables ([MCOL-5890](https://jira.mariadb.org/browse/MCOL-5890))
* Disk based GROUP\_CONCAT() ([MCOL-5921](https://jira.mariadb.org/browse/MCOL-5921))
* NULLIF function returns -32768 instead of NULL when querying a ColumnStore table ([MCOL-5922](https://jira.mariadb.org/browse/MCOL-5922))
* when a value of a column is empty text ('') the result of group\_concat(json\_object(...)) is null instead of the correct result set ([MCOL-5986](https://jira.mariadb.org/browse/MCOL-5986))

### Issues Fixed

#### Can result in hang or crash

* Creating different keys with cskeys on all nodes can break cluster(key not distributed properly) ([MCOL-5019](https://jira.mariadb.org/browse/MCOL-5019))
* Bitwise aggregation functions do not work with wide decimals (internal error) ([MCOL-5386](https://jira.mariadb.org/browse/MCOL-5386))
* Loss of PrimProc can lead to infinite loop ([MCOL-5396](https://jira.mariadb.org/browse/MCOL-5396))
* GROUP\_CONCAT in query uses enormous amount of RAM causing OOM to kill PrimProc ([MCOL-5852](https://jira.mariadb.org/browse/MCOL-5852))
* mariadbd crashing randomly when running "SELECT calShowPartitions(" ([MCOL-5879](https://jira.mariadb.org/browse/MCOL-5879))
* SubAdapterStep::execute() MCS-2035 Fix Requested ([MCOL-5889](https://jira.mariadb.org/browse/MCOL-5889))
* primproc oversubscribes memory ([MCOL-5918](https://jira.mariadb.org/browse/MCOL-5918))
* primproc 11/SEGV - querying a view ([MCOL-5932](https://jira.mariadb.org/browse/MCOL-5932))
* Fix rollbacks in mcs cli and passing errors during broadcasting config. ([MCOL-5962](https://jira.mariadb.org/browse/MCOL-5962))

#### Related to performance

* Subselect sorting is single-threaded always ([MCOL-5316](https://jira.mariadb.org/browse/MCOL-5316))

### Platforms

In alignment with the [enterprise lifecycle](/docs/release-notes/enterprise-server/about/enterprise-server-lifecycle.md), MariaDB ColumnStore 23.10.3 is provided for:

* Debian 11 (x86\_64, ARM64)
* Debian 12 (x86\_64, ARM64)
* Red Hat Enterprise Linux 8 (x86\_64, ARM64)
* Red Hat Enterprise Linux 9 (x86\_64, ARM64)
* Rocky Linux 8 (x86\_64, ARM64)
* Rocky Linux 9 (x86\_64, ARM64)
* Ubuntu 20.04 (x86\_64, ARM64)
* Ubuntu 22.04 (x86\_64, ARM64)
* Ubuntu 24.04 (x86\_64, ARM64)

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