Monitoring Impala admission control

You can monitor Impala admission control from Grafana.

  1. In the list of Impala dashboards, and select Impala - Home.
    In Impala Overview, the number of of Impala databases, tables, the catalogd status, and other metrics appear.
  2. In Admission Control, view the Impala local memory in root default, the number of queries admitted that are running in root default, and the queries in root default (not shown).
  3. View the number of queries timed out and rejected in root default.
  4. Scroll down and in Query view the number of registered queries, fragments in flight, number of open files (not shown), data manipulation language (DML) time distribution, and data definition language (DDL) time distribution.