Big Data and HBase: Introduction and Comparison

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What is the primary purpose of a Meta Region in HBase?

To migrate Regions
To manage distributed storage
To record routing information of User Regions (correct)
To store user data

What is the most basic distributed storage unit of HBase?

Row
Region (correct)
KeyValue
Table

What is the process that migrates Regions in HBase?

META Region
User Region
HRegion
HMaster (correct)

What is the purpose of the ROOT-Table in ZooKeeper?

To search for the address of the Meta Region (A) Signup and view all the answers

What is the range of KeyValue in a Region described by?

StartKey and EndKey (B) Signup and view all the answers

How many Regions are needed to record the EndKey of a Region?

The next Region (B) Signup and view all the answers

What is a ColumnFamily in HBase?

A physical storage unit of a Region (B) Signup and view all the answers

What is the function of ZooKeeper in HBase regarding distributed lock service?

Registering a node only by one HMaster process (B) Signup and view all the answers

What is the configuration information of a ColumnFamily in HBase?

Table-level configuration information (D) Signup and view all the answers

What happens when the active HMaster process fails in HBase?

The active HMaster's record is deleted from ZooKeeper (C) Signup and view all the answers

What is ZooKeeper in HBase in terms of storing addresses?

A micro database (C) Signup and view all the answers

What is the path of multiple ColumnFamilies of the same Region in HDFS?

Different paths (C) Signup and view all the answers

What is the main purpose of major compaction in HBase?

To clear deleted data from files (A) Signup and view all the answers

What happens to the data files of the parent Region during Region splitting?

They are not split or rewritten to the two subregions (C) Signup and view all the answers

Why are reference files created in the new Region during Region splitting?

To achieve quick splitting (A) Signup and view all the answers

What happens to the reading and writing services of the Region during Region splitting?

They are suspended for a short time (A) Signup and view all the answers

What is the trigger for Region splitting in HBase?

When the data size of the Region exceeds the predefined threshold (B) Signup and view all the answers

What needs to be updated after Region splitting in HBase?

The routing information of the parent Region (D) Signup and view all the answers

What is the primary difference between HBase and traditional relational databases?

Lack of support for transactions (D) Signup and view all the answers

What is the typical use case for HBase?

Massive data processing with high scalability (A) Signup and view all the answers

What is the purpose of the Key in a KeyValue pair in HBase?

To quickly query a data record (C) Signup and view all the answers

How does HBase store data?

By block (B) Signup and view all the answers

What is a characteristic of KeyValue in HBase?

Dynamic data expansion (B) Signup and view all the answers

How are different columns in HBase related?

They are independent of each other (A) Signup and view all the answers

What is a limitation of Hadoop?

It can perform only batch processing and sequential data access (C) Signup and view all the answers

What is a key feature of HBase?

It provides quick random access to huge amounts of structured data (D) Signup and view all the answers

What is the role of HDFS in HBase?

It serves as the file storage system (D) Signup and view all the answers

What is the primary advantage of HBase over Hadoop?

It can perform real-time data access (D) Signup and view all the answers

What is the purpose of ZooKeeper in HBase?

It serves as a collaboration service (B) Signup and view all the answers

What type of data is HBase suitable for storing?

Big table data with billions of rows and millions of columns (C) Signup and view all the answers