Question - What are the components of Apache HBase’s Region Server?
Answer -
The following are the components of HBase’s region server:
- BlockCache: It resides on the region server and stores data in the memory, which is read frequently.
- WAL: Write ahead log or WAL is a file that is attached to each region server located in the distributed environment.
- MemStore: MemStore is the write cache that stores the input data before it is stored in the disk or permanent memory.
- HFile: HDFS stores the HFile that stores the cells on the disk.