Getting UncheckedExecutionException when using get method

[SusilPanda]

scenario : deleted the column family (ex : Employee) and then using mapper.get(employeeBean).
In this case expected exception is InvalidQueryException, but I am getting com.google.common.util.concurrent.UncheckedExecutionException - com.datastax.driver.core.exceptions.invalidQueryExceptions .

My query is why the expected query is wrapped in the UncheckedExecutionException.