Some questions about HBASE

songminwang · Created Aug 27, 2019 03:37:48

Hello!

The core class of Hbase consists of the following: Master, Client, RegionServer, ZooKeeper cluster, HDFS cluster. The Hbase is related to this introduction:

Master	Also called HMaster. In High Availability (HA) mode, Master involves the active Master and standby Master. · Active HMaster: Manages RegionServer in HBase, including the creation, deletion, modification, and query of a table, balances the load of RegionServer, adjusts the distribution of Region, splits Region and distributes Region after it is split, and migrates Region after RegionServer expires. · Standby HMaster: Takes over services from the active HMaster if the active HMaster is faulty. The original active HMaster serves as the standby HMaster when the fault is rectified.
Client	Client communicates with Master and RegionServer by using the Remote Procedure Call (RPC) mechanism of HBase. Client communicates with Master for management and with RegionServer for data operation.
RegionServer	Provides read/write services of table data as a data processing and computing unit in HBase. The RegionServer is usually deployed with the DataNode of the HDFS cluster to store data.
ZooKeeper cluster	Provides distributed coordination services for processes in the HBase cluster. Each RegionServer is registered with ZooKeeper so that HMaster can obtain the health status of each RegionServer.
HDFS cluster	Provides highly reliable file storage services for HBase. All HBase data is stored in the HDFS.

songminwang · Created Aug 27, 2019 03:37:48

Hello!

The core class of Hbase consists of the following: Master, Client, RegionServer, ZooKeeper cluster, HDFS cluster. The Hbase is related to this introduction:

Master	Also called HMaster. In High Availability (HA) mode, Master involves the active Master and standby Master. · Active HMaster: Manages RegionServer in HBase, including the creation, deletion, modification, and query of a table, balances the load of RegionServer, adjusts the distribution of Region, splits Region and distributes Region after it is split, and migrates Region after RegionServer expires. · Standby HMaster: Takes over services from the active HMaster if the active HMaster is faulty. The original active HMaster serves as the standby HMaster when the fault is rectified.
Client	Client communicates with Master and RegionServer by using the Remote Procedure Call (RPC) mechanism of HBase. Client communicates with Master for management and with RegionServer for data operation.
RegionServer	Provides read/write services of table data as a data processing and computing unit in HBase. The RegionServer is usually deployed with the DataNode of the HDFS cluster to store data.
ZooKeeper cluster	Provides distributed coordination services for processes in the HBase cluster. Each RegionServer is registered with ZooKeeper so that HMaster can obtain the health status of each RegionServer.
HDFS cluster	Provides highly reliable file storage services for HBase. All HBase data is stored in the HDFS.

Some questions about HBASE

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Some questions about HBASE

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