New in version 2.3: (experimental)
<keyspace> <view> Shows the progress of a materialized view build.
nodetool viewbuildstatus my_keyspace my_view my_view has not finished building; node status is below. Host Info 22.214.171.124 STARTED
UNKNOWN - The host doesn’t know about that view.
STARTED - The host is building the view.
SUCCESS - The host has finished building the view.