Manual:job table

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Manual:Contents MediaWiki database layout job table


Table that holds a list of pending jobs. Used only when $wgJobTypeConf uses the JobQueueDB class.

Fields[edit]

job_id[edit]

Primary key.

job_cmd[edit]

Command name, limited to 60 characters to prevent key length overflow. Command names correspond to keys from $wgJobClasses.

job_namespace[edit]

Namespace to act on. Should be 0 if the command does not operate on a title. Used in conjunction with job_title.

job_title[edit]

Title to act on. Should be empty if the command does not operate on a title. Used in conjunction with job_namespace.

job_timestamp[edit]

MediaWiki version: 1.19

Timestamp of when the job was inserted. NULL for jobs added before addition of the timestamp.

job_params[edit]

Any other parameters to the command. Stored as a PHP serialized array, or an empty string if there are no parameters.

job_random[edit]

MediaWiki version: 1.21

Random, non-unique, number used for concurrent job acquisition.

job_attempts[edit]

MediaWiki version: 1.21

The number of times this job has been locked.

job_token[edit]

MediaWiki version: 1.21

Field that conveys process locks on rows via process UUIDs. Unlocked jobs have this field set to an empty string.

job_token_timestamp[edit]

Timestamp when the job was locked. Unlocked jobs have this field null.

job_sha1[edit]

Base 36 SHA1 of the job parameters relevant to detecting duplicates.

Schema summary[edit]

MediaWiki version: 1.21

DESCRIBE job;

+---------------------+---------------------+------+-----+---------+----------------+
| Field               | Type                | Null | Key | Default | Extra          |
+---------------------+---------------------+------+-----+---------+----------------+
| job_id              | int(10) unsigned    | NO   | PRI | NULL    | AUTO_INCREMENT |
| job_cmd             | varbinary(60)       | NO   | MUL | NULL    |                |
| job_namespace       | int(11)             | NO   |     | NULL    |                |
| job_title           | varchar(255) binary | NO   |     | NULL    |                |
| job_timestamp       | varbinary(14)       | YES  | MUL | NULL    |                |
| job_params          | blob                | NO   |     | NULL    |                |
| job_random          | int(10) unsigned    | NO   |     | 0       |                |
| job_attempts        | int(10) unsigned    | NO   |     | 0       |                |
| job_token           | varbinary(32)       | NO   |     | NULL    |                |
| job_token_timestamp | varbinary(14)       | YES  |     | NULL    |                |
| job_sha1            | varbinary(32)       | NO   |     | NULL    |                |
+---------------------+---------------------+------+-----+---------+----------------+
MediaWiki versions: 1.19 – 1.20

DESCRIBE job;

+---------------+---------------------+------+-----+---------+----------------+
| Field         | Type                | Null | Key | Default | Extra          |
+---------------+---------------------+------+-----+---------+----------------+
| job_id        | int(10) unsigned    | NO   | PRI | NULL    | AUTO_INCREMENT |
| job_cmd       | varbinary(60)       | NO   | MUL | NULL    |                |
| job_namespace | int(11)             | NO   |     | NULL    |                |
| job_title     | varchar(255) binary | NO   |     | NULL    |                |
| job_timestamp | varbinary(14)       | YES  | MUL | NULL    |                |
| job_params    | blob                | NO   |     | NULL    |                |
+---------------+---------------------+------+-----+---------+----------------+
MediaWiki versions: 1.10 – 1.18

DESCRIBE job;

+---------------+---------------------+------+-----+---------+----------------+
| Field         | Type                | Null | Key | Default | Extra          |
+---------------+---------------------+------+-----+---------+----------------+
| job_id        | int(10) unsigned    | NO   | PRI | NULL    | AUTO_INCREMENT |
| job_cmd       | varbinary(60)       | NO   | MUL | NULL    |                |
| job_namespace | int(11)             | NO   |     | NULL    |                |
| job_title     | varchar(255) binary | NO   |     | NULL    |                |
| job_params    | blob                | NO   |     | NULL    |                |
+---------------+---------------------+------+-----+---------+----------------+
MediaWiki versions: 1.6 – 1.9

DESCRIBE job;

+---------------+---------------------+------+-----+---------+----------------+
| Field         | Type                | Null | Key | Default | Extra          |
+---------------+---------------------+------+-----+---------+----------------+
| job_id        | int(9) unsigned     | NO   | PRI | NULL    | AUTO_INCREMENT |
| job_cmd       | varchar(255)        | NO   | MUL | NULL    |                |
| job_namespace | int(11)             | NO   |     | NULL    |                |
| job_title     | varchar(255) binary | NO   |     | NULL    |                |
| job_params    | blob                | NO   |     | NULL    |                |
+---------------+---------------------+------+-----+---------+----------------+


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