Postgres-XC 1.1 Documentation
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Chapter 17. Coordinator and Datanode Configuration

Table of Contents
17.1. Setting Parameters
17.1.1. Parameter Names and Values
17.1.2. Setting Parameters via the Configuration File
17.1.3. Other Ways to Set Parameters
17.1.4. Examining Parameter Settings
17.2. File Locations
17.3. Connections and Authentication
17.3.1. Connection Settings
17.3.2. Security and Authentication
17.4. Resource Consumption
17.4.1. Memory
17.4.2. Disk
17.4.3. Kernel Resource Usage
17.4.4. Cost-based Vacuum Delay
17.4.5. Background Writer
17.4.6. Asynchronous Behavior
17.5. Write Ahead Log
17.5.1. Settings
17.5.2. Checkpoints
17.5.3. Archiving
17.6. Replication
17.6.1. Sending Server(s)
17.6.2. Master Server
17.6.3. Standby Servers
17.7. Query Planning
17.7.1. Planner Method Configuration
17.7.2. Planner Cost Constants
17.7.3. Genetic Query Optimizer
17.7.4. Other Planner Options
17.8. Error Reporting and Logging
17.8.1. Where To Log
17.8.2. When To Log
17.8.3. What To Log
17.8.4. Using CSV-Format Log Output
17.9. Run-time Statistics
17.9.1. Query and Index Statistics Collector
17.9.2. Statistics Monitoring
17.10. Automatic Vacuuming
17.11. Client Connection Defaults
17.11.1. Statement Behavior
17.11.2. Locale and Formatting
17.11.3. Other Defaults
17.12. Lock Management
17.13. Version and Platform Compatibility
17.13.1. Previous PostgreSQL Versions
17.13.2. Platform and Client Compatibility
17.14. Error Handling
17.15. Preset Options
17.16. Customized Options
17.17. Developer Options
17.18. Postgres-XC Specific Parameters
17.19. Short Options

There are many configuration parameters for coordinators and datanodes that affect the behavior of the database system. In the first section of this chapter, we describe how to set configuration parameters. The subsequent sections discuss each parameter in detail.

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