MRS Hive Data Source Connection Failed

Cause Analysis

The possible causes are as follows:

• The private IP address specified in the MRS Hive configuration file cannot communicate with the IP address of the FDI data plane. As a result, the connection fails.
• HDFS URL is set to the root directory hdfs://hacluster, but the user specified by Machine-machine Username does not have the administrator permission. As a result, the connection fails.

Solution

• Bind an EIP to the MRS Hive server and change the IP address in the configuration file to the EIP. Then, add the dfs.client.use.datanode.hostname configuration item to the hdfs-site.xml fil, and set the value to true.
• Change Machine-machine Username to the name of a user with the administrator permission or change HDFS URL to a directory on which the user has sufficient permissions.