Page History

...

Once the minicluster has been started, we could log into the Impala shell as an administrator with username 'admin' by executing '$IMPALA_HOME/bin/impala-shell -u admin'. The account of 'admin' was added by the function function 'setup-ranger' in 'create-load-data.sh' above. To tell whether or not the Impala is Ranger-enabled, we could try to execute 'refresh authorization' in the Impala shell. If the Ranger is enabled in Impala, we would see some output similar to the following.

[localhost:21000] default> refresh authorization;
Query: refresh authorization
Query submitted at: 2019-08-29 15:17:37 (Coordinator: http://fangyurao-OptiPlex-9020:25000)
Query progress can be monitored at: http://fangyurao-OptiPlex-9020:25000/query_plan?query_id=374567f0bf4ca48b:0769d23700000000
Fetched 0 row(s) in 0.02s

If the Ranger service is not correctly enabled, then after executing '$IMPALA_HOME/bin/impala-shell -u admin' followed by 'refresh authorization' in the Impala shell, we may see the following error message.

[localhost:21000] default> refresh authorization;
Query: refresh authorization
Query submitted at: 2019-08-29 15:23:37 (Coordinator: http://fangyurao-OptiPlex-9020:25000)
ERROR: AnalysisException: Authorization is not enabled. To enable authorization restart Impala with the --server_name=<name> flag.

We also note that currently to create 'admin' in the Ranger service before this account is created, we have to run '$IMPALA_HOME/testdata/bin/create-load-data.sh' (the 5th step above to start a Ranger-enabled Impala minicluster), which does much more than needed because this script will also load the whole test datasets to Impala, which is time-consuming. A better approach is thus to only call the function 'setup-ranger' in 'create-load-data.sh' only.