All Documentation
Cloud Data Migration
Cloud Data Migration
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" in this service
All results for "
" in this service
What's New
Function Overview
Service Overview
What Is CDM?
Product Advantages
Supported Data Sources
Supported Data Sources (2.9.3.300)
Supported Data Sources (2.9.2.200)
Supported Data Types
Application Scenarios
Basic Concepts
Regions and AZs
CDM Migration Principles
Related Services
Notes and Constraints
Billing
Security
Shared Responsibilities
Asset Identification and Management
Identity Authentication and Access Control
Data Protection Technologies
Audit and Logging
Service Resilience
Security Risk Monitoring
Recovery from Failures
Update Management
Certificates
Quotas
Permissions Management
Getting Started
Overview
Step 1: Creating a Cluster
Step 2: Creating Links
Step 3: Creating and Executing a Job
Step 4: Viewing Job Execution Result
Practices
User Guide
Permissions Management
Creating a User and Granting CDM Permissions
Creating a Custom Policy
Supported Data Sources
Supported Data Sources (2.9.3.300)
Supported Data Sources (2.9.2.200)
Supported Data Types
Managing Clusters
Creating a CDM Cluster
Binding or Unbinding an EIP
Restarting a Cluster
Deleting a Cluster
Downloading Cluster Logs
Viewing Basic Cluster Information and Modifying Cluster Configurations
Managing Cluster Tags
Viewing Metrics
CDM Metrics
Configuring Alarm Rules
Querying Metrics
Managing Links
Creating a Link
Managing Drivers
Managing Cluster Configurations
Link to OBS
Link to PostgreSQL/SQLServer
Link to DWS
Link to an RDS for MySQL/MySQL Database
Link to an Oracle Database
Link to DLI
Link to Hive
Link to HBase
Link to HDFS
Link to an FTP or SFTP Server
Link to Redis
Link to DDS
Link to CloudTable
Link to MongoDB
Link to Cassandra
Link to DIS
Link to Kafka
Link to DMS Kafka
Link to CSS
Link to Elasticsearch
Link to a Dameng Database
Link to SAP HANA
Link to a Database Shard
Link to MRS Hudi
Link to MRS ClickHouse
Link to a ShenTong Database
Link to LogHub (SLS)
Managing Jobs
Table/File Migration Jobs
Creating an Entire Database Migration Job
Source Job Parameters
From OBS
From HDFS
From HBase/CloudTable
From Hive
From DLI
From FTP/SFTP
From HTTP
From PostgreSQL/SQL Server
From DWS
From SAP HANA
From MySQL
From Oracle
From a Database Shard
From MongoDB/DDS
From Redis
From DIS
From Kafka/DMS Kafka
From Elasticsearch or CSS
From MRS Hudi
From MRS ClickHouse
From a Dameng Database
From LogHub (SLS)
From a ShenTong Database
Destination Job Parameters
To OBS
To HDFS
To HBase/CloudTable
To Hive
To MySQL/SQL Server/PostgreSQL
To Oracle
To DWS
To DDS
To Elasticsearch/CSS
To DLI
To MRS Hudi
To MRS ClickHouse
To MongoDB
Configuring Field Mapping
Scheduling Job Execution
Job Configuration Management
Managing a Single Job
Managing Jobs in Batches
Viewing Traces
Viewing Traces
Key CDM Operations Recorded by CTS
Key Operation Guide
Incremental Migration
Incremental File Migration
Incremental Migration of Relational Databases
HBase/CloudTable Incremental Migration
MongoDB/DDS Incremental Migration
Using Macro Variables of Date and Time
Migration in Transaction Mode
Encryption and Decryption During File Migration
MD5 Verification
Configuring Field Converters
Adding Fields
Migrating Files with Specified Names
Regular Expressions for Separating Semi-structured Text
Recording the Time When Data Is Written to the Database
File Formats
Converting Unsupported Data Types
Tutorials
Creating an MRS Hive Link
Creating a MySQL Link
Migrating Data from MySQL to MRS Hive
Migrating Data from MySQL to OBS
Migrating Data from MySQL to DWS
Migrating an Entire MySQL Database to RDS
Migrating Data from Oracle to CSS
Migrating Data from Oracle to DWS
Migrating Data from OBS to CSS
Migrating Data from OBS to DLI
Migrating Data from MRS HDFS to OBS
Migrating the Entire Elasticsearch Database to CSS
Best Practices
Tutorials
Creating an MRS Hive Link
Creating a MySQL Link
Migrating Data from MySQL to MRS Hive
Migrating Data from MySQL to OBS
Migrating Data from MySQL to DWS
Migrating an Entire MySQL Database to RDS
Migrating Data from Oracle to CSS
Migrating Data from Oracle to DWS
Migrating Data from OBS to CSS
Migrating Data from OBS to DLI
Migrating Data from MRS HDFS to OBS
Migrating the Entire Elasticsearch Database to CSS
Advanced Data Migration Guidance
Incremental Migration
Incremental File Migration
Incremental Migration of Relational Databases
HBase/CloudTable Incremental Migration
MongoDB/DDS Incremental Migration
Using Macro Variables of Date and Time
Migration in Transaction Mode
Encryption and Decryption During File Migration
MD5 Verification
Configuring Field Converters
Migrating Files with Specified Names
Regular Expressions for Separating Semi-structured Text
Recording the Time When Data Is Written to the Database
File Formats
Scheduling a CDM Job by Transferring Parameters Using DataArts Factory
Enabling Incremental Data Migration Through DataArts Factory
Creating Table Migration Jobs in Batches Using CDM Nodes
Case: Trade Data Statistics and Analysis
Scenario
Analysis Process
Using CDM to Upload Data to OBS
Uploading Inventory Data
Uploading Incremental Data
Analyzing Data
Case: IoV Big Data Service Migration to Cloud
Scenario
Migration Preparation
Using CDM to Migrate Data of the Last Month
Using DES to Migrate Historical Data Generated One Month Ago
Restoring the HBase Table on MRS
Performance White Paper
How Migration Jobs Work
Performance Tuning
Reference: Job Splitting Dimensions
Reference: CDM Performance Test Data
Security White Paper
CDM Security Overview
CDM Security Conclusion
API Reference
Before You Start
Overview
Endpoints
Project ID and Account ID
Concepts
API Overview
Calling APIs
Making an API Request
Authentication
Response
Application Example
API
Cluster Management
Querying Cluster Details
Deleting a Cluster
Restarting a Cluster
Starting a Cluster
Stopping a Cluster (To Be Taken Offline)
Creating a Cluster
Querying the Cluster List
Job Management
Querying a Job
Deleting a Job
Modifying a Job
Creating and Executing a Job in a Random Cluster
Stopping a Job
Creating a Job in a Specified Cluster
Starting a Job
Querying Job Status
Querying Job Execution History
Link Management
Creating a Link
Querying a Link
Deleting a Link
Modifying a Link
Public Data Structures
Link Parameter Description
Link to a Relational Database
Link to OBS
Link to HDFS
Link to HBase
Link to CloudTable
Link to Hive
Link to an FTP or SFTP Server
Link to MongoDB
Link to Redis
Link to Kafka
Link to DIS
Link to Elasticsearch/Cloud Search Service
Link to DLI
Link to CloudTable OpenTSDB
Link to DMS Kafka
Source Job Parameters
From a Relational Database
From Object Storage
From HDFS
From Hive
From HBase/CloudTable
From FTP/SFTP
From HTTP/HTTPS
From MongoDB/DDS
From Redis
From DIS
From Kafka
From Elasticsearch/Cloud Search Service
Destination Job Parameters
To a Relational Database
To OBS
To HDFS
To Hive
To HBase/CloudTable
To DDS
To Elasticsearch/Cloud Search Service
To DLI
To DIS
Job Parameter Description
Permissions Policies and Supported Actions
Appendix
Status Code
Error Code
FAQs
General
What Are the Differences Between CDM and Other Data Migration Services?
What Are the Advantages of CDM?
What Are the Security Protection Mechanisms of CDM?
How Do I Reduce the Cost of Using CDM?
Will I Be Billed If My CDM Cluster Does Not Use the Data Transmission Function?
Why Am I Billed Pay per Use When I Have Purchased a Yearly/Monthly CDM Incremental Package?
How Do I Check the Remaining Validity Period of a Package?
Will My Data Be Retained If My Package Expires or My Pay-per-Use Resources Are in Arrears?
Can CDM Be Shared by Different Tenants?
Can I Upgrade a CDM Cluster?
How Is the Migration Performance of CDM?
What Is the Number of Concurrent Jobs for Different CDM Cluster Versions?
Can I Stop a CDM Cluster?
Functions
Does CDM Support Incremental Data Migration?
Does CDM Support Field Conversion?
What Component Versions Are Recommended for Migrating Hadoop Data Sources?
What Data Formats Are Supported When the Data Source Is Hive?
Can I Synchronize Jobs to Other Clusters?
Can I Create Jobs in Batches?
Can I Schedule Jobs in Batches?
How Do I Back Up CDM Jobs?
How Do I Configure the Connection If Only Some Nodes in the HANA Cluster Can Communicate with the CDM Cluster?
How Do I Use Java to Invoke CDM RESTful APIs to Create Data Migration Jobs?
How Do I Connect the On-Premises Intranet or Third-Party Private Network to CDM?
Does CDM Support Parameters or Variables?
How Do I Set the Number of Concurrent Extractors for a CDM Migration Job?
Does CDM Support Real-Time Migration of Dynamic Data?
Can I Stop CDM Clusters?
How Do I Obtain the Current Time Using an Expression?
What Is the Time Format for the Where Clause Parameters for Creating a Migration Job?
Can CDM Migrate Field Comments from a Source Table to a Destination Table?
Troubleshooting
What Should I Do If the Log Prompts that the Date Format Fails to Be Parsed?
What Can I Do If the Map Field Tab Page Cannot Display All Columns?
How Do I Select Distribution Columns When Using CDM to Migrate Data to DWS?
What Do I Do If the Error Message "value too long for type character varying" Is Displayed When I Migrate Data to DWS?
What Can I Do If Error Message "Unable to execute the SQL statement" Is Displayed When I Import Data from OBS to SQL Server?
What Should I Do If the Cluster List Is Empty, I Have No Access Permission, or My Operation Is Denied?
Why Is Error ORA-01555 Reported During Migration from Oracle to DWS?
What Should I Do If the MongoDB Connection Migration Fails?
What Should I Do If a Hive Migration Job Is Suspended for a Long Period of Time?
What Should I Do If an Error Is Reported Because the Field Type Mapping Does Not Match During Data Migration Using CDM?
What Should I Do If a JDBC Connection Timeout Error Is Reported During MySQL Migration?
What Should I Do If a CDM Migration Job Fails After a Link from Hive to DWS Is Created?
How Do I Use CDM to Export MySQL Data to an SQL File and Upload the File to an OBS Bucket?
What Should I Do If CDM Fails to Migrate Data from OBS to DLI?
What Should I Do If Error Message "Configuration Item [linkConfig.createBackendLinks] Does Not Exist" Is Displayed During Data Link Creation or Error Message "Configuration Item [throttlingConfig.concurrentSubJobs] Does Not Exist" Is Displayed During Job Creation?
What Should I Do If Message "CORE_0031:Connect time out. (Cdm.0523)" Is Displayed During the Creation of an MRS Hive Link?
What Should I Do If Message "CDM Does Not Support Auto Creation of an Empty Table with No Column" Is Displayed When I Enable Auto Table Creation?
What Should I Do If I Cannot Obtain the Schema Name When Creating an Oracle Relational Database Migration Job?
What Should I Do If invalid input syntax for integer: "true" Is Displayed During MySQL Database Migration?
What Should I Do If the Migration Source Is Oracle and Error Message "snapshot too old" Is Displayed?
What Should I Do If Error "Identifier name is too long" Is Reported During Entire DB Migration to Hive?
What Should I Do If Data Is Lost During Migration to DLI?
What Should I Do If the Oracle Link Connectivity Test Is Successful on the Link Creation Page but Fails on the Links Page?
What Should I Do If Destination Fields Are Not Displayed When Auto Table Creation Is Enabled in the Destination Job Configuration?
What Should I Do If a Job Exported from a Cluster Fails to Be Imported to Another Cluster?
What Should I Do If an Error Message Is Displayed Indicating that the Block Is Missing During HDFS File Migration?
What Should I Do If the CDM Job Management Page Cannot Be Accessed and a Message Is Displayed Indicating that the Network or Server Cannot Be Accessed?
What Should I Do If a CDM Cluster of Version 2.8.6 Fails to Migrate Data from OBS to DLI?
What Should I Do If Error Message "Read timedout" Is Displayed During DWS Data Migration?
What Should I Do If No Database or Table Information Can Be Obtained Through a Hive Link?
What Should I Do If Error "get filesystem" Is Reported During the Creation of a FusionInsight HDFS Link?
What Should I Do If Error "Invoke DLI service api failed" Is Reported When the Data Migration from MySQL to DLI Is About to Complete?
What Should I Do If a MongoDB Field Fails to Be Migrated to the Destination?
What Should I Do If a Field Is Escaped and Contains a Backslash (\) During the Migration of a DLI Foreign Table (OBS File) to DWS?
What Should I Do If "Error occurs during loader run" Is Reported During Migration from PostgreSQL to Hive?
What Should I Do If Error Message "Lost connection to MySQL server during query" Is Displayed During Migration from MySQL to DWS?
What Should I Do If Error Message "For input string: "false" Is Displayed During Field Type Conversion During MySQL-to-DLI Migration?
What Should I Do If an Error Occurs During the Migration of TINYINT Data from MySQL to DWS?
What Shoud I Do If the Data Volume Is Inconsistent Before and After Data Migration?
What Should I Do If an Error Is Reported Indicating an Incorrect Username or Password During Link Creation but They Are Correct Indeed?
What Should I Do If a Message Is Displayed Indicating that the Fields in the Lower Camel Case Do Not Exist During Data Migration from a Database to OBS?
What Should I Do If Error "invalid utf-8 character string" Is Reported When CSV Data Is Inserted into the MySQL Database?
What Should I Do If a Scheduled Job Fails and Link Connectivity Is Abnormal?
What Should I Do If CSV Data Fails to Be Inserted into a MySQL Database?
What Should I Do If Error "timeout waiting for connection from pool" Is Reported During ES Writing?
Why Is Error ORA-01555 Reported During Migration from Oracle to DWS?
What Shoud I Do If the FTP Connectivity Test Fails and an Internal Server Error Is Reported?
What Should I Do If All Users Except User root Cannot Access RDS for MySQL?
Hudi Source Case Library
What Should I Do If a Hudi Read Job Is in the Booting State for a Long Time?
What Should I Do If a Hudi Read Job Fails to Be Executed Because the Field Mapping Page Has an Extra Column?
Hudi Destination Case Library
What Should I Do If the Auto Creation of the Hudi Table Fails Due to a Schema Mismatch?
What Should I Do If a Hudi Job Stays in Booting Status for a Long Time and then Fails and the "Read timed out" Error Is Contained in the Log?
What Should I Do If the Number of Read Rows Is the Same as That of Write Rows, Both Numbers No Longer Increase, and the Job Stays in Running State?
What Should I Do If a Job Stays in Running State but the Number of Written Rows Is 0?
What Should I Do If Data Fails to Be Written to Hudi Using Spark SQL?
What Should I Do If a Job Fails Due to Intermittent Disconnection, Timeout, or Connection Termination of the Source Link?
General Reference
Glossary
Service Level Agreement
White Papers
Endpoints
Permissions