tencent cloud

TDSQL Boundless

Release Notes
Product Introduction
Overview
Scenarios
Product Architecture
Instance Types
Compatibility Notes
Usage specification recommendations
Kernel Features
Kernel Overview
Kernel Version Release Notes
Functionality Features
Performance Features
Billing
Billing Overview
Purchase Method
Pricing Details
Renewal
Overdue Payments
Refund
Getting Started
Creating an Instance
Connect to Instances
User Guide
Data Migration
Data Subscription
Instance Management
Parameter Configuration
Account Management
Security Group
Backup and Restoration
Database Auditing
Tag Management
Use Cases
Technical Evolution and Usage Practices of Online DDL
Lock Mechanism Analysis and Troubleshooting Practices
Data Intelligent Scheduling and Related Practices for Performance Optimization
TDSQL Boundless Selection Guide and Practical Tutorial
Developer Guide
Developer Guide (MySQL Compatibility Mode)
Developer Guide (HBase Compatibility Mode)
Performance Tuning
Performance Tuning Overview
SQL Tuning
DDL Tuning
Performance White Paper
Performance Overview
TPC-C Test
Sysbench Test
API Documentation
History
Introduction
API Category
Making API Requests
Instance APIs
Security Group APIs
Task APIs
Backup APIs
Rollback APIs
Parameter APIs
Database APIs
Data Types
Error Codes
General Reference
System Architecture
SQL Reference
Database Parameter Description
TPC-H benchmark data model reference
Error Code Information
Security and Compliance
FAQs
Agreements
Service Level Agreement
Terms of Service
Privacy Policy
Data Processing And Security Agreement
Contact Us
Glossary
문서TDSQL BoundlessGeneral ReferenceSQL ReferenceData DictionaryINFORMATION_SCHEMATDSTORE_LOCAL_METADATA_WRITE_FENCE

TDSTORE_LOCAL_METADATA_WRITE_FENCE

PDF
포커스 모드
폰트 크기
마지막 업데이트 시간: 2026-02-10 11:06:32

Function

INFORMATION_SCHEMA.TDSTORE_LOCAL_METADATA_WRITE_FENCE is used to display the write fence information for each replication group in nodes.

Field Description

Field Name
Type
Description
replication_group_id
bigint unsigned
ID of the replication group for the write fence.
schema_obj_id
int unsigned
ID of the write fence.
schema_obj_version
int unsigned
version of the write fence.
start_key
varchar(128)
start key of the write fence.
end_key
varchar(128)
end_key of the write fence.
is_online_ddl
bigint unsigned
Whether it is a write fence created for online ddl. (This field is currently deprecated.)

Examples

tdsql3_sys_local@localhost [information_schema]> select * from TDSTORE_LOCAL_METADATA_WRITE_FENCE limit 3 \\G
*************************** 1. row ***************************
replication_group_id: 257
       schema_obj_id: 10001
  schema_obj_version: 3
           start_key: 0x00002711
             end_key: 0x00002712
       is_online_ddl: 0
*************************** 2. row ***************************
replication_group_id: 257
       schema_obj_id: 10002
  schema_obj_version: 1
           start_key: 0x00002712
             end_key: 0x00002713
       is_online_ddl: 0
*************************** 3. row ***************************
replication_group_id: 257
       schema_obj_id: 10003
  schema_obj_version: 1
           start_key: 0x00002713
             end_key: 0x00002714
       is_online_ddl: 0
이전 주제: TDSTORE_LOCAL_METADATA_TSO_META다음 주제: TDSTORE_PART_CTX

도움말 및 지원

문제 해결에 도움이 되었나요?

피드백