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.
| Scope / Role | Setting in Cloudera Manager | Default Port | Comment |
|---|---|---|---|
|
Impala Daemon |
Impala Daemon Frontend Port |
21000 |
Used to transmit commands and receive results by impala-shell and version 1.2 of the Cloudera ODBC driver. |
|
Impala Daemon |
Impala Daemon Frontend Port |
21050 |
Used to transmit commands and receive results by applications, such as Business Intelligence tools, using JDBC, the Beeswax query editor in Hue, and version 2.0 or higher of the Cloudera ODBC driver. |
|
Impala Daemon |
Impala Daemon Backend Port |
22000 |
Internal use only. Impala daemons use this port to communicate with each other. |
|
Impala Daemon |
StateStoreSubscriber Service Port |
23000 |
Internal use only. Impala daemons listen on this port for updates from the statestore daemon. |
|
Catalog Daemon |
StateStoreSubscriber Service Port |
23020 |
Internal use only. The catalog daemon listens on this port for updates from the statestore daemon. |
|
Impala Daemon |
Impala Daemon HTTP Server Port |
25000 |
Impala web interface for administrators to monitor and troubleshoot. |
|
Impala StateStore Daemon |
StateStore HTTP Server Port |
25010 |
StateStore web interface for administrators to monitor and troubleshoot. |
|
Impala Catalog Daemon |
Catalog HTTP Server Port |
25020 |
Catalog service web interface for administrators to monitor and troubleshoot. New in Impala 1.2 and higher. |
|
Impala StateStore Daemon |
StateStore Service 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 service 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. |