Titlebook: Apache HBase Primer; Deepak Vohra Book 2016 Deepak Vohra 2016 hbase.Apache HBase.hadoop.big data.cloud.database.apache.software.Apache Had

2否定

Fundamental CharacteristicsApache HBase is the Hadoop database. HBase is open source and its fundamental characteristics are that it is a non-relational, column-oriented, distributed, scalable, big data store. HBase provides schema flexibility. The fundamental characteristics of Apache HBase are as follows.

Grandstand

Application CharacteristicsApache HBase is designed to be used for random, real-time, relatively low latency, read/write access to big data. HBase’s goal is to store very large tables with billions/millions of rows and billions/millions of columns on clusters installed on commodity hardware.

OVER

Major Components of a ClusterAn HBase cluster can consist of one or more nodes with its components distributed across the cluster. The major components of HBase cluster are as follows:

儿童

Finding a Row in a TableIn this chapter I discuss how a row in a Apache HBase table is found.

果仁

Defining the Row KeysThe primary data access pattern is by row key. No design-time way to specify row keys exists because to HBase they are simply byte arrays. When designing for optimal read performance, it is important to first understand the read path.

Immunization

群居男女

interlude

Trochlea

affluent

Isolierstoffe in der Niederspannungstechnik,tem. HBase indexes data into HFiles and stores the data on the HDFS Datanodes. HDFS is not a general purpose file system and does not provide fast record lookups in files. HBase is built on top of HDFS and provides fast record lookups and updates for large tables. HBase stores table data as key/valu