Accumulo: How to creat a new table and set permissions

Creating a new table in Accumulo is pretty easy. It is as simple as


createtable my_new_cool_table


Now let's say that you create this table as a root. How can you check if another user will be able to read or write to this table? Let's say that you have user bob, how can you check what this user sees or can do?


Run following command
userpermissions -u bob


You should see a list of tables and current user authorization on a particular table


userpermissions -u bob
System permissions: System.CREATE_TABLE, System.DROP_TABLE, System.SYSTEM
Table permissions (!METADATA): Table.READ
Table permissions (META): Table.READ, Table.WRITE


The new table is not in the list since user bob can't do anything with the table that was created by root. Let's change that! In order for user bob to be able to read from new table, execute this command


grant Table.READ -t my_new_cool_table -u bob


If you were to re-execute userpermissions command, you would see


userpermissions -u bob
System permissions: System.CREATE_TABLE, System.DROP_TABLE, System.SYSTEM
Table permissions (!METADATA): Table.READ
Table permissions (META): Table.READ, Table.WRITE
Table permissions (my_new_cool_table): Table.READ


Full list of authorizations:
Table.ALTER_TABLE  
Table.BULK_IMPORT  
Table.DROP_TABLE   
Table.GRANT        
Table.READ         
Table.WRITE