Relationship Between HetuEngine and Other Components

The HetuEngine installation depends on the MRS cluster. Table 1 lists the components on which the HetuServer installation depends.

Table 1 Components on which HetuEngine depends

Name

Description

HDFS

Hadoop Distributed File System, supporting high-throughput data access and suitable for applications with large-scale data sets.

Hive

Open-source data warehouse built on Hadoop. It stores structured data and implements basic data analysis using the Hive Query Language (HQL), a SQL-like language.

ZooKeeper

Enables highly reliable distributed coordination. It helps prevent single point of failures (SPOFs) and provides reliable services for applications.

KrbServer

Key management center that distributes bills.

Yarn

Resource management system, which is a general resource module that manages and schedules resources for various applications.

DBService

DBService is a high-availability relational database storage system that provides metadata backup and restoration functions.