HBase NoSQL Interview Preparation (Q&A)

Question: Can you create HBase table without assigning column family.
Answer : No, Column family also impact how the data should be stored physically in the HDFS file system, hence there is a mandate that you should always have at least one column family. We can also alter the column families once the table is created.


Question: In which file the default configuration of HBase is stored.
Answer : hbase-site.xml


Question: What is the RowKey.
Answer: Every row in an HBase table has a unique identifier called its rowkey (Which is equivalent to Primary key in RDBMS, which would be distinct throughout the table). Every interaction you are going to do in database will start with the RowKey only. © www.Hadoop Exam.com


Question: Please specify the command (Java API Class) which you will be using to interact with HBase table.
Answer: Get, Put, Delete, Scan, and Increment

Related Questions

---

Question: Which data type is used to store the data in HBase table column.

Question: To locate the HBase data cell which three co-ordinate is used ?

Question: When you persist the data in HBase Row, In which tow places HBase writes the data to make sure the durability.

Question: What is MemStore ?

Question: What is HFile ?

Question: How HBase Handles the write failure.

Question: Which of the API command you will use to read data from HBase.

Question: What is the BlcokCache ?