Growing Steady – Operating in 34 countries globally – Customer count and revenue growing – Pivotal engineering investment growing – 9 Greenplum Database releases in 2016 – Open source code contribution growing

，参与者并不知道是否提交事 务，所以必须等协调者从失败中恢复。 27 两阶段提交存在的问题 1. Uncertainty Period 2. Blocking 图片来源：Bernstein的著作Principles of Transaction Processing 28 ● 事务的实现原理和Write Ahead Log（WAL） ● 分布式事务和两阶段提交的原理 ● Greenplum两阶段提交协议的实现 分布式事务和两阶段提交的原理 ● Greenplum两阶段提交协议的实现 ● Greenplum两阶段提交协议的优化 Outline 36 一阶段提交 图片来源：Bernstein的著作Principles of Transaction Processing 37 Greenplum分布式事务的一阶段提交 DTX_PROTOCOL_COMMAND_COMMIT_ONEPHASE QD

Configuring the Distributed Port Groups 352 VMware Greenplum 6 Documentation VMware by Broadcom 17 Principles of VMware vSphere Distributed Switch to Uplink Assignment 352 Using Four 100GbE Links 353 Enabling Click Next, confirm your settings and click Finish. Configuring the Distributed Port Groups Principles of VMware vSphere Distributed Switch to Uplink Assignment VMware Greenplum 6 Documentation VMware creating and configuring the distributed port groups listed above, you must adhere to the following principles: Always use active/standby uplinks to optimize the performance by avoiding a single point of

Settings 273 Creating the Distributed Port Groups 273 Configuring the Distributed Port Groups 274 Principles of VMware Vsphere Distributed Switch to Uplink Assignment 274 Using Four 100GbE Links 275 Enabling Groups Principles of VMware Vsphere Distributed Switch to Uplink Assignment When creating and configuring the distributed port groups listed above, you must adhere to the following principles: Always However, there is a risk of degraded performance if the active link goes offline. Based on the principles above, and depending on your Dell EMC VxRail topology, the configuration of the port groups may

Settings 315 Creating the Distributed Port Groups 316 Configuring the Distributed Port Groups 317 Principles of VMware vSphere Distributed Switch to Uplink Assignment 317 Using Four 100GbE Links 317 Enabling Groups Principles of VMware vSphere Distributed Switch to Uplink Assignment When creating and configuring the distributed port groups listed above, you must adhere to the following principles: Always However, there is a risk of degraded performance if the active link goes offline. Based on the principles above, and depending on your Dell EMC VxRail topology, the configuration of the port groups may

Settings 305 Creating the Distributed Port Groups 305 Configuring the Distributed Port Groups 306 Principles of VMware vSphere Distributed Switch to Uplink Assignment 306 Using Four 100GbE Links 307 Enabling Groups Principles of VMware vSphere Distributed Switch to Uplink Assignment When creating and configuring the distributed port groups listed above, you must adhere to the following principles: Always However, there is a risk of degraded performance if the active link goes offline. Based on the principles above, and depending on your Dell EMC VxRail topology, the configuration of the port groups may

Settings 301 Creating the Distributed Port Groups 301 Configuring the Distributed Port Groups 302 Principles of VMware vSphere Distributed Switch to Uplink Assignment 302 Using Four 100GbE Links 302 Enabling Groups Principles of VMware vSphere Distributed Switch to Uplink Assignment When creating and configuring the distributed port groups listed above, you must adhere to the following principles: Always However, there is a risk of degraded performance if the active link goes offline. Based on the principles above, and depending on your Dell EMC VxRail topology, the configuration of the port groups may

Settings 334 Creating the Distributed Port Groups 335 Configuring the Distributed Port Groups 336 Principles of VMware vSphere Distributed Switch to Uplink Assignment 336 Using Four 100GbE Links 336 Enabling Groups Principles of VMware vSphere Distributed Switch to Uplink Assignment When creating and configuring the distributed port groups listed above, you must adhere to the following principles: Always However, there is a risk of degraded performance if the active link goes offline. Based on the principles above, and depending on your Dell EMC VxRail topology, the configuration of the port groups may

Database users to run different machine learning and deep learning functions, including feature engineering, model training, evaluation and scoring. Geospatial Analytics PostGIS is a spatial database extension support the full spectrum of data science activities. This includes data transformation and feature engineering, using methods in descriptive and inferential statistics, pivoting, sessionization and encoding Understanding Segment Recovery This topic provides background information about concepts and principles of segment recovery. If you have down segments and need immediate help recovering them, see the

Database users to run different machine learning and deep learning functions, including feature engineering, model training, evaluation and scoring. Geospatial Analytics PostGIS is a spatial database extension support the full spectrum of data science activities. This includes data transformation and feature engineering, using methods in descriptive and inferential statistics, pivoting, sessionization and encoding Understanding Segment Recovery This topic provides background information about concepts and principles of segment recovery. If you have down segments and need immediate help recovering them, see the