Ahh 5.11, there's been so many Impala improvements since then!   This happens when the Impala daemon can't load the initial catalog (i.e. database and table metadata). The catalog and statestore roles are both involved in the catalog loading, so if the impala daemon isn't able to communicate with those roles, or those are not started or healthy then that could lead to these symptoms. You should be able to see in Cloudera Manager if they're started and if there are any warnings or errors being flagged.   It might also be just that the catalog is slow to load (maybe there's a lot of metadata or something else is unhealthy). You would need to look at the logs of the impala daemon you're connecting and maybe the catalog to see what it's doing and why its slow.   I know this doesn't address your immediate problem, but we've seen a lot of these metadata/catalog problem go away with later versions - CDH5.16 or CDH6+, and particularly by moving to a dedicated coordinator/executor topology - https://docs.cloudera.com/documentation/enterprise/5-16-x/topics/impala_dedicated_coordinator.html. ... View more