Quotas and limits

Data Lake Compute

Product Introduction

Purchase Guide

Configuration Adjustment Fees

Getting Started

Complete Process for New User Activation

DLC Data Import Guide

Quick Start with Data Analytics in Data Lake Compute

Quick Start with Permission Management in Data Lake Compute

Quick Start with Partition Table

Enabling Data Optimization

Cross-Source Analysis of EMR Hive Data

Standard Engine Configuration Guide

Operation Guide

Console Operation Introduction

Data Development and Exploration

Data Exploration

SQL Editor

Data Query Task

SELECT Task

Querying Partition Table

Querying JSON Data

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Using View

INSERT INTO

Querying Script Parameters

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Overview

Configuring Data Access Policy

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Permission Overview

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Development Guide

SparkJar Job Development Guide

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Query Performance Optimization Guide

UDF Function Development Guide

Materialized View

System Restraints

Metadata Information

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Client Access

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Configuring Public Access for Standard Engine

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Practical Tutorial

Table Creation Practice

Using Apache Airflow to Schedule DLC Engine to Submit Tasks

Direct Query of DLC Internal Storage with StarRocks

DLC Native Table

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DLC Source Table Operation Configuration

DLC Source Table Lake Ingestion Practice

DLC Source Table FAQs

SQL Statement

SuperSQL Statement

Overview of SuperSQL Statement

Unified Statement

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ALTER DATABASE

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REPLACE TABLE AS SELECT

SHOW COLUMNS IN TABLE

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ALTER TABLE ADD COLUMNS

ALTER TABLE ADD COLUMN AFTER/FIRST

ALTER TABLE DROP COLUMN

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SHOW PARTITIONS

ALTER TABLE DROP PARTITION

ALTER TABLE ADD PARTITION FIELD

ALTER TABLE DROP PARTITION FIELD

ALTER TABLE ... RENAME COLUMN

ALTER TABLE SET TBLPROPERTIES

ALTER TABLE SET LOCATION

ALTER TABLE ... WRITE ORDERED BY

ALTER TABLE ... WRITE DISTRIBUTED BY PARTITION

ALTER TABLE ... SET IDENTIFIER FIELDS

ALTER TABLE ... DROP IDENTIFIER FIELDS

ALTER VIEW

ALTER VIEW SET TBLPROPERTIES

DML Statement

DQL Statement

Iceberg Table Statement

Differences in Statement Between Iceberg External Tables and Native Tables

Materialized View Statement

SQL Implicit Conversion

Functions

Unified Functions

Overview of Unified Functions

Binary Functions

Bitwise Functions

Collection Functions

Date and Time Functions

JSON Functions

Mathematical Functions

Presto Built-in Functions

Comparison of Hive Functions

Overview of Standard Spark Statement

Overview of Standard Presto Statement

API Documentation

Making API Requests

Data Table APIs

DescribeLakeFsDirSummary

DescribeLakeFsInfo

QueryResult

GenerateCreateMangedTableSql

Task APIs

Metadata APIs

DescribeForbiddenTablePro

DescribeDLCCatalogAccess

GrantDLCCatalogAccess

RevokeDLCCatalogAccess

DropDMSTable

DropDLCTable

DescribeDMSDatabaseList

Service Configuration APIs

CreateCHDFSBindingProduct

DeleteCHDFSBindingProduct

DescribeOtherCHDFSBindingList

CreateStoreLocation

DescribeStoreLocation

ModifyDataEngineDescription

RollbackDataEngineImage

SwitchDataEngine

SwitchDataEngineImage

UpgradeDataEngineImage

DeleteThirdPartyAccessUser

DescribeDataEngineImageVersions

DescribeSubUserAccessPolicy

DescribeThirdPartyAccessUser

RegisterThirdPartyAccessUser

RestartDataEngine

UpdateUserDataEngineConfig

UpdateDataEngineConfig

Permission Management APIs

Database APIs

ModifyAdvancedStoreLocation

ModifyGovernEventRule

DescribeAdvancedStoreLocation

Data Source Connection APIs

CheckDataEngineImageCanBeRollback

CheckDataEngineImageCanBeUpgrade

DescribeDataEnginePythonSparkImages

Data Optimization APIs

GetOptimizerPolicy

Data Engine APIs

CreateDataEngine

DescribeDataEnginesScaleDetail

DeleteDataEngine

RenewDataEngine

SuspendResumeDataEngine

UpdateDataEngine

DescribeUpdatableDataEngines

DescribeDataEngine

DescribeUserDataEngineConfig

CheckDataEngineConfigPairsValidity

General Reference

Operation Guide on Connecting Third-Party Software to DLC

Connecting CBoard to DLC

DLC Policy

Data Privacy And Security Agreement

Service Level Agreement

DocumentationData Lake ComputeGeneral ReferenceQuotas and limits

Quotas and limits

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Last updated: 2024-07-23 14:11:48

Quotas and limits

Last updated: 2024-07-23 14:11:48

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Resource Quota limits
There are not any limits to private engine. But if you need to increase resource engine CU quota greater than 256CUs, please  raise a request to DLC team.
Job Limits
Quota
Default
Notes
Query usage per day
Unlimited
 -
Query usage per day per user
Unlimited
 -
Maximum number of concurrent multi-statement queries
20
Increased by request
Daily query size limit
Unlimited
 -
Daily destination table update limit
Unlimited
 -
Query/multi-statement query execution-time limit
Unlimited
 -
Maximum number of sql query tables
Unlimited
 -
Maximum number of sql query parameters
Unlimited
- 
External Table Limits
Quota
Default
Maximum number of files per external table
Unlimited
Maximum size of stored data on COS per external table
Unlimited
Maximum number of files in the source COS bucket
Unlimited
Database/Table/Column/Partition Limits
Quota
Default
Notes
Maximum number of DBS per user 
1,000
 
Maximum number of tables per user 
10,000
 
Maximum number of tables per db 
4,096
 
Maximum number of columns per table
4,096
 
Maximum number of partitions per table
100,000
 
Maximum number of partitions per user
1,000,000
 
Maximum number of UDF per user
100
 
Maximum number of catalogs per user
20
 
Maximum length of db name
127 characters
 
Maximum length of db description
2048 characters
 
Maximum length of external table location (cos)
888 characters
 
Maximum length of parameters/total length for db
127/3000 characters
Format:Map<string:string>
Maximum length of table/view name
127 characters
 
Maximum length of table/view description
1000 characters
 
Maximum length of parameters/total length for table/view
127/512000 characters
Format:Map<string:string>
Maximum number of nested view levels
Unlimited
 
Maximum length of a SQL query used to define a view
10M characters
 
Maximum number of authorized views per dataset
4096
 
Maximum length of column name
127 characters
 
Maximum length of column description
256 characters
 
Maximum length of column type 
256 characters
 
Maximum length of column partition
127 characters
 
UDF Limits
Quota
Default
Maximum number of outputs per line
5 MB
Maximum embed code blob size
32 KB
Maximum size per external code resource
1 MB
Maximum length of UDF names
256 characters
Maximum number of parameters
256 characters
Maximum length of parameter names
128 characters
UDF reference chain depth limit
16
The upper limit of the depth of the STRUCT type parameter or output
15 levels
Maximum update rate per UDF every 10 seconds
5
Maximum number of fields in a parameter or output of type STRUCT per UDF
1024 fields
DML Limits
Quota
Default
DML statements per day
Unlimited
Concurrent mutating DML statements per table
20 statements
Maximum rate of DML statements for each table
100 statements every 1 seconds
Row Level Permissions Limits
Quota
Default
Maximum number of row access policies per table
400 policies
Maximum number of row access policies per query
6,000 policies
Maximum number of CREATE/DROP DDL statements per 10 seconds per policy
5 statements
Number of DROP ALL ROW ACCESS POLICIES statements per table per 10 seconds
5 statements
API Limits
API limits refer to document API Category .
﻿

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Quota	Default	Notes
Query usage per day	Unlimited	-
Query usage per day per user	Unlimited	-
Maximum number of concurrent multi-statement queries	20	Increased by request
Daily query size limit	Unlimited	-
Daily destination table update limit	Unlimited	-
Query/multi-statement query execution-time limit	Unlimited	-
Maximum number of sql query tables	Unlimited	-
Maximum number of sql query parameters	Unlimited	-

Quota	Default
Maximum number of files per external table	Unlimited
Maximum size of stored data on COS per external table	Unlimited
Maximum number of files in the source COS bucket	Unlimited

Quota	Default
Maximum number of outputs per line	5 MB
Maximum embed code blob size	32 KB
Maximum size per external code resource	1 MB
Maximum length of UDF names	256 characters
Maximum number of parameters	256 characters
Maximum length of parameter names	128 characters
UDF reference chain depth limit	16
The upper limit of the depth of the STRUCT type parameter or output	15 levels
Maximum update rate per UDF every 10 seconds	5
Maximum number of fields in a parameter or output of type STRUCT per UDF	1024 fields

Quota	Default
DML statements per day	Unlimited
Concurrent mutating DML statements per table	20 statements
Maximum rate of DML statements for each table	100 statements every 1 seconds

Quota	Default
Maximum number of row access policies per table	400 policies
Maximum number of row access policies per query	6,000 policies
Maximum number of CREATE/DROP DDL statements per 10 seconds per policy	5 statements
Number of DROP ALL ROW ACCESS POLICIES statements per table per 10 seconds	5 statements

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