Avoid potential deadlock when running cqlsh
Avoid potential deadlock when running cqlsh

pcmanus/ccm,thobbs/ccm,tolbertam/ccm,bcantoni/ccm,bcantoni/ccm,tolbertam/ccm,thobbs/ccm,mikefero/ccm,mike-tr-adamson/ccm,pcmanus/ccm,mike-tr-adamson/ccm,pcmanus/ccm,mikefero/ccm,mike-tr-adamson/ccm