Fang-Yu Rao created IMPALA-14884:
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Summary: Consider supporting SHOW CURRENT GROUPS statement
Key: IMPALA-14884
URL: https://issues.apache.org/jira/browse/IMPALA-14884
Project: IMPALA
Issue Type: Task
Reporter: Fang-Yu Rao
Assignee: Fang-Yu Rao
Impala uses [RangerAuthorizationChecker#getUserGroups(User
user)|https://github.com/apache/impala/blob/764e225292e07a8de11ed924dbdde4c9221b5ff8/fe/src/main/java/org/apache/impala/authorization/ranger/RangerAuthorizationChecker.java#L567-L578]
to resolve the groups of a given user in the production environment during
authorization.
{code:java}
public Set<String> getUserGroups(User user) throws InternalException {
Preconditions.checkNotNull(user);
UserGroupInformation ugi;
if (RuntimeEnv.INSTANCE.isTestEnv() ||
BackendConfig.INSTANCE.useCustomizedUserGroupsMapperForRanger()) {
ugi = UserGroupInformation.createUserForTesting(user.getShortName(),
new String[]{user.getShortName()});
} else {
ugi = UserGroupInformation.createRemoteUser(user.getShortName());
}
return new HashSet<>(ugi.getGroups());
}
{code}
It would be very helpful if Impala supports the {{SHOW CURRENT GROUPS}}
statement that lists the groups associated with the current/effective user,
especially when it's not easy to retrieve such information in an environment
where the related command line tools are not installed.
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