Ports Used by Impala

Impala uses the TCP ports listed in the following table. Before deploying Impala, ensure these ports are open on each system. You can use the corresponding start-up flags to overwrite the default ports.

Scope / Role	Startup Flag	Default Port	Comment
Impala Daemon	--beeswax_port	21000	Port on which Beeswax client requests are served by Impala Daemons.
Impala Daemon	--hs2_port	21050	Port on which HiveServer2 client requests are served by Impala Daemons.
Impala Daemon	--be_port	22000	Internal use only. Impala daemons use this port for Thrift based communication with each other.
Impala Daemon	--state_store_subscriber_port	23000	Internal use only. Impala daemons listen on this port for updates from the StateStore daemon.
Catalog Daemon	--state_store_subscriber_port	23020	Internal use only. The Catalog Server daemon listens on this port for updates from the StateStore daemon.
Impala Daemon	--webserver_port	25000	Impala debug Web UI for administrators to monitor and troubleshoot.
Impala StateStore Daemon	--webserver_port	25010	StateStore debug Web UI for administrators to monitor and troubleshoot.
Impala Catalog Daemon	--webserver_port	25020	Catalog Server debug Web UI for administrators to monitor and troubleshoot. New in Impala 1.2 and higher.
Impala StateStore Daemon	--state_store_port	24000	Internal use only. The StateStore daemon listens on this port for registration/unregistration requests.
Impala Catalog Daemon	--catalog_service_port	26000	Internal use only. The Catalog Server uses this port to communicate with the Impala daemons. New in Impala 1.2 and higher.
Impala Daemon	--krpc_port	27000	Internal use only. Impala daemons use this port for KRPC based communication with each other.
Impala Daemon	--hs2_http_port	28000	Used to transmit commands and receive results by client applications over HTTP via the HiveServer2 protocol.