innodb_lock_schedule_algorithm

Overview

In 23.08 ES, 23.07 ES, 10.6 ES, 10.6 CS:

Not present

In 23.08 ES, 23.07 ES, 10.6 ES:

Not present

In 10.5 ES, 10.5 CS, 10.4 ES, 10.4 CS, 10.3 ES, 10.3 CS, 10.2 ES, 10.2 CS:

The algorithm Innodb uses for deciding which locks to grant next when a lock is released. Possible values are FCFS grant the locks in First-Come-First-Served order; VATS use the Variance-Aware-Transaction-Scheduling algorithm, which uses an Eldest-Transaction-First heuristic.

In 10.5 ES, 10.4 ES:

The algorithm Innodb uses for deciding which locks to grant next when a lock is released. Possible values are FCFS grant the locks in First-Come-First-Served order; VATS use the Variance-Aware-Transaction-Scheduling algorithm, which uses an Eldest-Transaction-First heuristic.

See also: System Variables for MariaDB Enterprise Server 23.08, in 23.07 ES, in 10.6 ES, in 10.5 ES, in 10.4 ES, in 10.3 ES, in 10.2 ES, in 10.6 CS, in 10.5 CS, in 10.4 CS, in 10.3 CS, and in 10.2 CS

See also: System Variables for MariaDB Enterprise Server 23.08, in 23.07 ES, in 10.6 ES, in 10.5 ES, and in 10.4 ES

USAGE

DETAILS

SYNONYMS

SCHEMA

PARAMETERS

Command-line

--innodb_lock_schedule_algorithm={fcfs|vats}

Configuration file

Supported

Dynamic

No

Scope

Global

Data Type

ENUM (fcfs, vats)

Product Default Value

fcfs

SKYSQL

Cloud

SkySQL Topology

ES Ver

Service Default

AWS

Multi-Node Analytics

10.6

Not present

Single Node Analytics

10.6

Not present

Replicated Transactions

10.4

fcfs

10.5

fcfs

10.6

Not present

Single Node Transactions

10.4

fcfs

10.5

fcfs

10.6

Not present

GCP

Multi-Node Analytics

10.6

Not present

Single Node Analytics

10.6

Not present

Replicated Transactions

10.4

fcfs

10.5

fcfs

10.6

Not present

Single Node Transactions

10.4

fcfs

10.5

fcfs

10.6

Not present

Cloud

SkySQL Topology

ES Ver

Service Default

AWS

ColumnStore Data Warehouse

10.6

Not present

Enterprise Server With Replica(s)

10.4

fcfs

10.5

fcfs

10.6

Not present

Enterprise Server Single Node

10.4

fcfs

10.5

fcfs

10.6

Not present

GCP

ColumnStore Data Warehouse

10.6

Not present

Enterprise Server With Replica(s)

10.4

fcfs

10.5

fcfs

10.6

Not present

Enterprise Server Single Node

10.4

fcfs

10.5

fcfs

10.6

Not present

PRIVILEGES

EXAMPLES

ERROR HANDLING

FEATURE INTERACTION

RESPONSES

DIAGNOSIS

ISO 9075:2016

CHANGE HISTORY

Release Series

History

23.08 Enterprise

  • Not present.

23.07 Enterprise

  • Not present.

10.6 Enterprise

  • Removed in MariaDB Enterprise Server 10.6.4-1.

10.6 Community

  • Removed in MariaDB Community Server 10.6.0.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.5 Community

  • Present starting in MariaDB Community Server 10.5.0.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

10.4 Community

  • Present starting in MariaDB Community Server 10.4.0.

10.3 Enterprise

  • Present starting in MariaDB Enterprise Server 10.3.16-1.

10.3 Community

  • Present starting in MariaDB Community Server 10.3.0.

  • Dynamic changed in MariaDB Community Server 10.3.3 from Yes to No

  • Default value changed in MariaDB Community Server 10.3.9 from vats to fcfs

10.2 Enterprise

  • Present starting in MariaDB Enterprise Server 10.2.25-1.

10.2 Community

  • Added in MariaDB Community Server 10.2.3.

  • Dynamic changed in MariaDB Community Server 10.2.12 from Yes to No

  • Default value changed in MariaDB Community Server 10.2.17 from vats to fcfs

Release Series

History

23.08 Enterprise

  • Not present.

23.07 Enterprise

  • Not present.

10.6 Enterprise

  • Removed in MariaDB Enterprise Server 10.6.4-1.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

EXTERNAL REFERENCES