[jira] [Assigned] (HIVE-18127) Do not strip '--' comments from shell commands issued from CliDriver

["Andrew Sherman (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-18127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Sherman reassigned HIVE-18127:
-------------------------------------


> Do not strip '--' comments from shell commands issued from CliDriver
> --------------------------------------------------------------------
>
>                 Key: HIVE-18127
>                 URL: https://issues.apache.org/jira/browse/HIVE-18127
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Andrew Sherman
>            Assignee: Andrew Sherman
>
> CLiDriver has the ability to run shell commands by prefixing them with '!".
> This behavior is not widely used (there are only 3 examples in .q files).
> Since HIVE-16935 started stripping comments starting with '\-\-', a shell command containing '--' will not work correctly.
> Fix this by using the unstripped command for shell commands.
> Note that it would be a security hole for HS2 to allow execution of arbitrary shell commands from a client command.
> Add tests to nail down correct behavior with '--' comments:
> * CliDriver should not strip strings starting with '--' in a shell command (FIXED in this change).
> * HiveCli should strip '--' comments.
> * A Jdbc program should allow commands starting with "!" but these will fail in the sql parser.



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