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ColumnStore Storage Engine

Overview

MariaDB Enterprise ColumnStore integrates with MariaDB Enterprise Server using the ColumnStore storage engine plugin. The ColumnStore storage engine plugin enables MariaDB Enterprise Server to interact with ColumnStore tables.

For deployment instructions and available documentation, see "MariaDB Enterprise ColumnStore".

Feature Summary The ColumnStore storage engine has the following features:

Feature

Detail

Resources

Storage Engine

ColumnStore

Availability

ES 10.5+, CS 10.5+

MariaDB Enterprise Server

Workload Optimization

OLAP and Hybrid

OLAP Workloads Hybrid Workloads

Table Orientation

Columnar

Columnar Storage Engine

ACID-compliant

Yes

Indexes

Unnecessary

Extent Elimination

Compression

Yes

Compression

High Availability (HA)

Yes

High Availability and Failover

Main Memory Caching

Yes

Transaction Logging

Yes

Version Buffer

Garbage Collection

Yes

Version Buffer

Online Schema changes

Yes

Online Schema Changes

Non-locking Reads

Yes

Lockless Reads

Examples

Creating a ColumnStore Table

To create a ColumnStore table, use the CREATE TABLE statement with the ENGINE=ColumnStore option:

CREATE DATABASE columnstore_db;

CREATE TABLE columnstore_db.analytics_test (
   id INT,
   str VARCHAR(50)
) ENGINE = ColumnStore;

Multi-Node Configuration

To deploy a multi-node Enterprise ColumnStore deployment, a configuration similar to below is required:

[mariadb]
log_error                              = mariadbd.err
character_set_server                   = utf8
collation_server                       = utf8_general_ci
log_bin                                = mariadb-bin
log_bin_index                          = mariadb-bin.index
relay_log                              = mariadb-relay
relay_log_index                        = mariadb-relay.index
log_slave_updates                      = ON
gtid_strict_mode                       = ON

# This must be unique on each cluster node
server_id                              = 1

Configure the Mandatory Utility User Account

To configure the mandatory utility user account, use the mcsSetConfig command:

$ sudo mcsSetConfig CrossEngineSupport Host 127.0.0.1
$ sudo mcsSetConfig CrossEngineSupport Port 3306
$ sudo mcsSetConfig CrossEngineSupport User cross_engine
$ sudo mcsSetConfig CrossEngineSupport Password cross_engine_passwd