How to understand service in the FusionInsight system?

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A service is a kind of service capability provided by a component in a cluster. Each component in the cluster provides a service and is named by the service. For example, HBase, HDFS, and Spark are all service names.

Other related questions:
How to understand the role in the FusionInsight system?
A role is an element of a service. A service consists of one or multiple roles. Services are installed on hosts (servers) through roles, ensuring proper service running. For example, the HBase service consists of three roles, namely, HMaster (HM), RegionServer (RS), and ThriftServer (TS).

How to understand the cluster in the FusionInsight system?
A cluster is a computer technology that enables multiple servers to work as one server. It is deployed to improve the stability, reliability, and data processing or service capabilities of the system. For example, use of clusters helps prevent single point of failures (SPOFs), supports storage sharing and load sharing, and improves system performance.

How to understand the role instance in the FusionInsight system?
An instance is formed when a service role is installed on a host. Each service has a corresponding role instance.

In FusionInsight,How to handle Service Node Faulty
1.FusionInsight Manager regularly checks the running status of each node. In case one node is lost due to network or hardware problems, FusionInsight Manager generates the alarm "ALM-12006 Node Fault". Handle the alarm based on the handling procedure. 2.If the alarm persists after step 1, see 10.2.3 Replacing a Faulty Nodeto resolve the problem.

What is a service in the FusionInsight system?
A service is a kind of service capability provided by a component in a cluster. Each component in the cluster provides a service and is named by the service. For example, HBase, HDFS, and Spark are all service names.

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