Resolution: Not A Bug
Affects Version/s: None
Fix Version/s: None
After taking a brief observation, It seems to be the following operation behaves in the opposite manner of what they should be doing in case `null argument.
For example: `Admin#listTables(Pattern)` If its argument is `null` then all the tables would be returned. Also this very method is being used by rest of the listed operation like `deleteTables()`, `enableTables()`, `disableTables()` etc.
This could be a very rare scenario but I think it should either throw an exception or behave opposite of what current behavior is.
If this was not intentional then I can quickly put together a patch with precondition check for these operations.
Note: I tried to look for answers but I was not able to find any relevant issue/comments hence logging this issue. Feel free to close if this is intentional behavior.