What is the method for deleting table data in HBase?

There are several methods for deleting table data in HBase.

1. To delete data through the command line: You can use the HBase Shell command line tool to remove data from a table. First, use the scan command to find the data you want to delete, then use the delete command to remove the data that was found.
2. To delete data using Java API: You can utilize HBase’s Java API to delete data from a table. Firstly, retrieve the data to be deleted using the Scan class and ResultScanner interface, and then use the Delete class and Delete method to remove the data.
3. You can delete data using MapReduce: Utilize HBase’s MapReduce feature to delete data from a table. Write a MapReduce program with the data to be deleted as input, then use the Delete class in the Reducer to remove the data.
4. To delete data using the REST API in HBase, you can specify the table and location of the data to be deleted by sending an HTTP DELETE request to the corresponding endpoint of the REST API.

It is important to note that regardless of the method used to delete data from a table, the data cannot be directly deleted from the disk; instead, it is marked as deleted. HBase will remove these marked as deleted data during the cleanup process in the background.