In this chapter, we have covered the Impala command-line interface, explaining various ways Impala shell can connect to Impala daemon. Once a connection between Impala shell and impalad is established, we discussed various commands that can be used in impala-shell to process impalad. You may have seen that various commands perform specific tasks, and by using specific command line options, you can either change the behavior of commands or you can perform the same shell commands directly outside Impala shell.

In the next chapter, we will continue focusing on Impala Query Language and Impala built-in functions.