Docs Home
About TiDB
Quick Start
Develop
- Overview
- Quick Start
  - Build a TiDB Cluster in TiDB Cloud (Developer Tier)
  - CRUD SQL in TiDB
  - Build a Simple CRUD App with TiDB
    - Java
    - Golang
- Example Applications
  - Build a TiDB Application using Spring Boot
- Connect to TiDB
- Design Database Schema
- Write Data
- Read Data
- Transaction
- Optimize
  - Overview
  - SQL Performance Tuning
  - Best Practices for Performance Tuning
  - Best Practices for Indexing
  - Other Optimization Methods
    - Avoid Implicit Type Conversions
    - Unique Serial Number Generation
- Troubleshoot
- Reference
  - Bookshop Example Application
  - Guidelines
    - Object Naming Convention
    - SQL Development Specifications
  - Archived Docs
- Cloud Native Development Environment
  - Gitpod
- Third-party Support
  - Third-Party Libraries Support
  - Integrate with ProxySQL
Deploy
- Software and Hardware Requirements
- Environment Configuration Checklist
- Plan Cluster Topology
- Install and Start
  - Use TiUP (Recommended)
  - Deploy in Kubernetes
- Verify Cluster Status
- Test Cluster Performance
  - Test TiDB Using Sysbench
  - Test TiDB Using TPC-C
Migrate
Integrate
- Overview
- Integration Scenarios
  - Integrate with Confluent Cloud and Snowflake
  - Integrate with Apache Kafka and Apache Flink
Maintain
Monitor and Alert
Troubleshoot
Performance Tuning
- Tuning Guide
- Configuration Tuning
  - System Tuning
    - Operating System Tuning
  - Software Tuning
    - Configuration
    - Coprocessor Cache
- SQL Tuning
  - Overview
  - Understanding the Query Execution Plan
  - SQL Optimization Process
    - Overview
    - Logic Optimization
    - Physical Optimization
    - Prepare Execution Plan Cache
  - Control Execution Plans
Tutorials
TiDB Tools
- Overview
- Use Cases
- Download
- TiUP
- PingCAP Clinic Diagnostic Service
- TiDB Operator
- Dumpling
- TiDB Lightning
  - Overview
  - Prechecks and requirements
  - Key Features
  - Tutorial
  - Deploy
  - Configure
  - Monitor
  - FAQ
  - Glossary
- TiDB Data Migration
  - About TiDB Data Migration
  - Architecture
  - Quick Start
  - Deploy a DM cluster
  - Tutorials
    - Create a Data Source
    - Manage Data Sources
    - Configure Tasks
    - Table Routing
    - Block and Allow Lists
    - Binlog Event Filter
    - Filter DMLs Using SQL Expressions
    - Manage a Data Migration Task
  - Advanced Tutorials
    - Merge and Migrate Data from Sharded Tables
    - Migrate from MySQL Databases that Use GH-ost/PT-osc
    - Migrate Data to a Downstream TiDB Table with More Columns
  - Maintain
    - Cluster Upgrade
      - Maintain DM Clusters Using TiUP (Recommended)
      - Manually Upgrade from v1.0.x to v2.0+
    - Tools
      - Manage Using WebUI
      - Manage Using dmctl
    - Performance Tuning
    - Manage Data Sources
      - Switch the MySQL Instance to Be Migrated
    - Manage Tasks
      - Handle Failed DDL Statements
      - Manage Schemas of Tables to be Migrated
    - Export and Import Data Sources and Task Configurations of Clusters
    - Handle Alerts
    - Daily Check
  - Reference
    - Architecture
      - DM-worker
      - Relay Log
    - Command Line
      - DM-master & DM-worker
    - Configuration Files
    - OpenAPI
    - Compatibility Catalog
    - Secure
      - Enable TLS for DM Connections
      - Generate Self-signed Certificates
    - Monitoring and Alerts
      - Monitoring Metrics
      - Alert Rules
    - Error Codes
    - Glossary
  - Example
  - Troubleshoot
    - FAQ
    - Handle Errors
  - Release Notes
- Backup & Restore (BR)
- TiDB Binlog
  - Overview
  - Quick Start
  - Deploy
  - Maintain
  - Configure
    - Pump
    - Drainer
  - Upgrade
  - Monitor
  - Reparo
  - binlogctl
  - Binlog Consumer Client
  - TiDB Binlog Relay Log
  - Bidirectional Replication Between TiDB Clusters
  - Glossary
  - Troubleshoot
    - Troubleshoot
    - Handle Errors
  - FAQ
- TiCDC
  - Overview
  - Deploy
  - Maintain
  - Monitor and Alert
    - Monitoring Metrics
    - Alert Rules
  - Troubleshoot
  - Reference
  - FAQs
  - Glossary
- Dumpling
- sync-diff-inspector
- TiSpark
  - User Guide
Reference
FAQs
Release Notes
- All Releases
- Release Timeline
- TiDB Versioning
- v6.1
  - 6.1.0
- v6.0
  - 6.0.0-DMR
- v5.4
- v5.3
- v5.2
- v5.1
- v5.0
- v4.0
- v3.1
- v3.0
- v2.1
- v2.0
- v1.0
  - 1.0.8
  - 1.0.7
  - 1.0.6
  - 1.0.5
  - 1.0.4
  - 1.0.3
  - 1.0.2
  - 1.0.1
  - 1.0
  - Pre-GA
  - RC4
  - RC3
  - RC2
  - RC1
Glossary

TiDB 5.0.5 Release Note

Release date: December 3, 2021

TiDB version: 5.0.5

Bug fix

TiKV
- Fix the issue that the GcKeys task does not work when it is called by multiple keys. Caused by this issue, compaction filer GC might not drop the MVCC deletion information. #11217

Download PDF Request docs changes

What’s on this page

Bug fix

Was this page helpful?