Hi @bridgor ,   You may want to check out this thread: https://community.cloudera.com/t5/Interactive-Short-cycle-SQL/Impala-Catalogue-server-down-after-upgrading-from-5-11-0-to/td-p/57097/page/2,   I don't know what Impala version you are on (may have missed it), so I can't decide it the thread is directly applicable to your problem, but it looks remarkably similar. ... View more