HBase

HBase is an open-source, non-relational, distributed database modeled after Google's Bigtable and is written in Java. It is developed as part of Apache Software Foundation's Apache Hadoop project and runs on top of HDFS (Hadoop Distributed File System), providing Bigtable-like capabilities for Hadoop. That is, it provides a fault-tolerant way of storing large quantities of sparse data (small amounts of information caught within a large collection of empty or unimportant data, such as finding the 50 largest items in a group of 2 billion records, or finding the non-zero items representing less than 0.1% of a huge collection).

·         HBase is a distributed colume-oriented database built on top of the hadoop file system. It is an open source project and is horizontally scalable.

·         It provide quick random access to huge amount of structure data.It leverage the fault-tolerance provided by the hadoop file system.

·         It is NOSQL database and is classified as a key-value store, table have no schema.

·         It work for real time analysis of data.

·         It used for inserting and overwriting of data.

·         At the time of table creation, columns families are defined not columns.

                            

      HBase commands:

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