Cloudera Docs

Increasing StateStore Timeout

If you have an extensive Impala schema, for example, with hundreds of databases, tens of thousands of tables, you might encounter timeout errors during startup as the Impala catalog service broadcasts metadata to all the Impala nodes using the StateStore service. To avoid such timeout errors on startup, increase the StateStore timeout value from its default of 10 seconds.

Increase the timeout value of the StateStore service if you see messages in the impalad log such as: 
Connection with state-store lost
Trying to re-register with state-store
  1. In Cloudera Manager, navigate to Impala service > Configuration.
  2. In the search field, type -statestore_subscriber_timeout_seconds.
  3. In the StateStoreSubscriber Timeout field, specify a new timeout value larger than the current value.
  4. Click Save Changes and restart Impala.