Database Reference
In-Depth Information
Component Port
Type
Service description
Impalad
22000 Internal Backend port to communicate with each other
Impalad
23000 Internal Backend port to get update from the statestore
Impalad
25000 External Impala web interface for monitoring and
troubleshooting
Statestored 24000 Internal Statestore listen for registration/unregistration
Statestored 25010 External Statestore web interface for monitoring and
troubleshooting
Tip
Cloudera ODBC Connector 1.x uses Impala port 21000 to create connections;
however, the latest Cloudera ODBC Connector 2.0 and 2.5 connects to Impala
on the 21050 port.
It is important to remember that if any of the preceding port configuration is wrong or
blocked, you will experience various problems and would need to make sure that the
preceding port configuration is correct.
HDFS-specific problems
Impala runs on the DataNode that has dependency on NameNode in the Hadoop en-
vironment. Various HDFS-specific issues such as permission to read or write data on
