Segment 2 上，吉站可为 Gygenglum [后科称 GP 对是个PogigreSoL 实明和。GP 对外主代的入口，并用户雪上并行 情人 上| aaase 这He，人的入对 Segment 渤行;Standby aster 有为 aster 提供可用 Segment 节相生的工作 生生，并肝一个Segment节上上各有和个 PostgresoL 人 是大理相的咱入口，Sbwve 人 asler的| 站 YS0 的蛮，Regs 共生他 在aater segmment 类下，汪astey 页，其和合以上的至多个 Segment 中，和可以 Rd Css 只不过es Costsr 是下化的 在 aster segment 中党 Mostsyr Seve 本，内 本用 后林地来六Yaster sbave 主要和和抽《元和 ，而 Mastersegment 全由时行人区(水表 节点上的postmaster 示人ork 出一个于渤和，电红Query Dipatsher ( 局 ouer opaeer cg 人对上的二行理，生外交名、人化上优化有生了人查询计全二后查计划过这bpa 放送 近它风Segment上 L asama ro 进香查询 ouev pecor

56629f5ab2ca83436c8eb/p4_1.jpg) - WAL 日志文件XLOG 文件是一个逻辑概念，每一个XLOG 文件，大小为4G(16*256)，由256个segment组成； • Segment由2048个Block组成，其大小为16M； - Block为WAL日志的最小单位，其大小8k，由PageHeaderData、XlogRecord、XLogRecData组成。

Master Redundancy 163 The Segments 164 Segment Redundancy 164 Segment Failover and Recovery 165 Example Segment Host Hardware Stack 165 Example Segment Disk Layout 166 The Interconnect 166 directory location on the master 192 Creating Data Storage Areas on Segment Hosts 193 To create the data directory locations on all segment hosts 193 Next Steps 193 Validating Your Systems 193 Validating 233 Example iptables Rules 233 Example Master and Standby Master iptables Rules 234 Example Segment Host iptables Rules 235 Installation Management Utilities 235 Installation Management Utilities

Type 284 Compute 284 Memory 284 Network 284 Storage 284 GCP Recommendations 285 Master and Segment Instances 285 Azure 285 Virtual Machine Type 286 Compute 286 Memory 286 Network 286 Storage Redundancy 291 About the Greenplum Segments 291 Segment Redundancy 292 Segment Failover and Recovery 292 Example Segment Host Hardware Stack 293 Example Segment Disk Layout 294 About the Greenplum Interconnect Parallel Data Loading 312 About Redundancy and Failover in Greenplum Database 313 About Segment Mirroring 313 Segment Failover and Recovery 314 About Master Mirroring 314 About Interconnect Redundancy

Machine Type 254 Compute 254 Memory 254 Network 254 Storage 254 GCP Recommendations 255 Master and Segment Instances 255 Azure 255 Virtual Machine Type 256 Compute 256 Memory 256 Network 256 Storage 256 VMware Redundancy 261 About the Greenplum Segments 261 Segment Redundancy 262 Segment Failover and Recovery 262 Example Segment Host Hardware Stack 263 Example Segment Disk Layout 264 About the Greenplum Interconnect Parallel Data Loading 279 About Redundancy and Failover in Greenplum Database 280 About Segment Mirroring 280 Segment Failover and Recovery 281 VMware Tanzu Greenplum 6 Documentation VMware, Inc. 12 About

VMware, Inc 11 Compute 266 Memory 266 Network 266 Storage 266 GCP Recommendations 267 Master and Segment Instances 267 Azure 267 Virtual Machine Type 268 Compute 268 Memory 268 Network 268 Storage 268 Azure Redundancy 273 About the Greenplum Segments 273 Segment Redundancy 274 Segment Failover and Recovery 274 Example Segment Host Hardware Stack 275 Example Segment Disk Layout 276 About the Greenplum Interconnect Parallel Data Loading 294 About Redundancy and Failover in Greenplum Database 295 About Segment Mirroring 295 Segment Failover and Recovery 296 About Master Mirroring 296 About Interconnect Redundancy 297

Machine Type 258 Compute 258 Memory 258 Network 258 Storage 258 GCP Recommendations 259 Master and Segment Instances 259 Azure 259 Virtual Machine Type 260 Compute 260 Memory 260 Network 260 Storage 260 Azure VMware, Inc 11 About the Greenplum Segments 265 Segment Redundancy 266 Segment Failover and Recovery 266 Example Segment Host Hardware Stack 267 Example Segment Disk Layout 268 About the Greenplum Interconnect Parallel Data Loading 283 About Redundancy and Failover in Greenplum Database 284 About Segment Mirroring 284 Segment Failover and Recovery 285 About Master Mirroring 286 About Interconnect Redundancy 286

297 Compute 297 Memory 298 Network 298 Storage 298 GCP Recommendations 298 Master and Segment Instances 299 Azure 299 Virtual Machine Type 299 Compute 299 Memory 299 Network 300 Storage 305 About the Greenplum Segments 305 Segment Redundancy 306 Segment Failover and Recovery 306 Example Segment Host Hardware Stack 307 Example Segment Disk Layout 308 About the Greenplum Interconnect Data Loading 326 About Redundancy and Failover in Greenplum Database 327 About Segment Mirroring 327 Segment Failover and Recovery 328 About Master Mirroring 328 About Interconnect Redundancy

Master Redundancy 234 The Segments 234 Segment Redundancy 235 Segment Failover and Recovery 235 Example Segment Host Hardware Stack 236 Example Segment Disk Layout 237 The Interconnect 238 Interconnect directory location on the master 264 Creating Data Storage Areas on Segment Hosts 264 To create the data directory locations on all segment hosts 265 Next Steps 265 **Validating Your Systems** 265 Validating iptables 303 Example iptables Rules 304 Example Master and Standby Master iptables Rules 305 Example Segment Host iptables Rules 305 Installation Management Utilities 306 Greenplum Environment Variables 306

Master Redundancy 237 The Segments 237 Segment Redundancy 238 Segment Failover and Recovery 238 Example Segment Host Hardware Stack 239 Example Segment Disk Layout 239 The Interconnect 240 Interconnect directory location on the master 267 Creating Data Storage Areas on Segment Hosts 267 To create the data directory locations on all segment hosts 267 Next Steps 268 Validating Your Systems 268 Validating iptables 308 Example iptables Rules 309 Example Master and Standby Master iptables Rules 310 Example Segment Host iptables Rules 311 Installation Management Utilities 311 Installation Management Utilities