It would be great if we could update the Impala shell documentation to reflect the changes made in
IMPALA-6042. That is, the Impala shell now loads information from a global impalarc file (set through an environment variable), and those options can be overridden by options in a user impalarc file if one exists. It is also worth mentioning that within an impalarc file (global or user), query options specified under [impala] override options specified under [impala.query_options]. Please let me know if there are any questions.