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Data Lake Compute

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DocumentationData Lake ComputeDevelopment GuideSystem RestraintsMetadata Information

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Last updated: 2024-07-17 18:17:23
The following lists the limits on the numbers of databases, data tables, attribute columns, and partitions.
Item
Maximum Number
Databases per account
1,000
Data tables per account
10,000
Tables per database
4,096
Columns per data table
4,096
Partitions per table
10,000
Partitions per root account
1,000,000
Fields per table
4,096
Custom functions per account
100
Catalogs that can be created
20

Database

Name: It can contain up to 127 characters and must be unique in a data link.
Description: It can contain up to 2,048 characters.
Data address of an external table (COS address): It can contain up to 888 characters (COS path length limit).
Parameter: It is in the Map<string:string> format and can contain up to 127 characters. All parameters can contain up to 3,000 characters in total.

Data table/View

Name: It can contain up to 127 characters and must be unique in a database.
Description: It can contain up to 1,000 characters.
Data address of an external table (COS address): It can contain up to 888 characters (COS path length limit).
Parameter: It is in the Map<string:string> format and can contain up to 127 characters. All parameters can contain up to 512,000 characters in total.

Attribute column

Name: It can contain up to 127 characters and must be unique in a data table.
Description: It can contain up to 256 characters.
Field value: It can contain up to 131,072 characters. Longer values cannot be created.

Partition

Partition field name: It can contain up to 127 characters.
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