Which API can be used for exploring HBase tables?

Basically, to perform CRUD operations on HBase tables we use Java client API for HBase. Since HBase has a Java Native API and it is written in Java thus it offers programmatic access to DML (Data Manipulation Language).

What are the clients of HBase?

Chapter 6. HBase Clients

• The HBase shell.
• Kundera – the object mapper.
• The REST client.
• The Thrift client.
• The Hadoop ecosystem client.

Which write pattern is supported in HBase?

HBase supports random read and writes while HDFS supports Write once Read Many times. HBase is accessed through shell commands, Java API, REST, Avro or Thrift API while HDFS is accessed through MapReduce jobs.

What is HBase API?

HBase is written in Java and has a Java Native API. Therefore it provides programmatic access to Data Manipulation Language (DML).

Which server handles read and write requests in HBase?

They are HBase HMaster, Region Server, and ZooKeeper. Let’s start with Region servers, these servers serve data for reads and write purposes. That means clients can directly communicate with HBase Region Servers while accessing data.

Can HBase run without Hadoop?

HBase can be used without Hadoop. Running HBase in standalone mode will use the local file system. The reason arbitrary databases cannot be run on Hadoop is because HDFS is an append-only file system, and not POSIX compliant. Most SQL databases require the ability to seek and modify existing files.

Does HBase need zookeeper?

HBase relies completely on Zookeeper. HBase provides you the option to use its built-in Zookeeper which will get started whenever you start HBAse.

When use MongoDB over HBase?

Comparing to MongoDB, the positioning goes on to state the following: “HBase offers very fast random reads and random writes if you want to look up users on a particular key, but MongoDB provides a much richer model through which you could track user behavior all the way through an online application.”

What is difference between HBase and NoSQL?

Apache HBase is a column-oriented, NoSQL database built on top of Hadoop (HDFS, to be exact). It is an open source implementation of Google’s Bigtable paper. HBase is a top-level Apache project and just released its 1.0 release after many years of development. Data in HBase is broken into tables.