The Fusioninsight HD management node provides a dual-machine HA mechanism. After the master node fails, the master and backup nodes need to implement failover manually.

The statement is incorrect. While the Huawei FusionInsight HD management node does provide a dual-machine High Availability (HA) mechanism, the failover process from the active (master) node to the standby (backup) node is designed to be automatic. The core purpose of this HA architecture is to ensure service continuity and minimize downtime by automatically detecting a failure on the active node and promoting the standby node to take over its functions without requiring manual intervention.

The option "True" is incorrect because it falsely claims that the failover process is manual. A manual failover would defeat the primary objective of a high-availability system, which is to provide automated, rapid recovery from component failures. The FusionInsight HA framework, which often utilizes components like ZooKeeper for leader election and failure detection, is explicitly designed to automate this switchover.

1. Huawei FusionInsight HD Product Documentation: In various versions of the FusionInsight HD Administrator Guide, the High Availability (HA) feature for management nodes is described as an automatic process. For instance, the documentation specifies that management plane services like the OMS (Operation and Maintenance System) are deployed on active and standby management nodes. If the active node becomes faulty, the system automatically switches services to the standby node.

Reference: Huawei FusionInsight HD 6.5.1 Administrator Guide, Chapter: "High Availability", Section: "Management Node and Component HA". This section details that "If the active management node is faulty, services are automatically switched to the standby management node to ensure that services are not interrupted."

2. Huawei FusionInsight Technical White Paper: Technical white papers on the FusionInsight HD architecture consistently emphasize the platform's reliability and availability, which are achieved through redundancy and automatic failover mechanisms. The management node HA is a cornerstone of this design.

Reference: Huawei FusionInsight HD Solution Technical White Paper, Section: "High Reliability". This section typically explains that key components, including the HDFS NameNode, YARN ResourceManager, and management services, are deployed in an active/standby configuration for automatic failover, ensuring no single point of failure.

3. University Courseware on Big Data Platforms: Course materials covering distributed systems and big data architectures often discuss HA as a fundamental concept. When analyzing platforms like FusionInsight HD, the implementation of HA for critical master nodes (like the NameNode or management controllers) is highlighted as an automated process using mechanisms like a shared state store (e.g., ZooKeeper) and a floating IP address to manage the transition seamlessly.

Reference: Course materials on "Distributed Systems" or "Big Data Infrastructure" would explain that HA clusters for master nodes rely on heartbeat mechanisms and quorum-based systems to detect failures and trigger an automatic election or promotion of a standby node. The manual failover described in the question is contrary to this standard industry practice for HA.