[HUDI-821] Fix the wrong annotation of JCommander IStringConverter

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Component/s: deltastreamer
• Labels: pull-request-available
• Assignee: Deng Ziming
• Reporter: Deng Ziming
• Created: 21/Apr/20 02:43
• Updated: 23/Apr/20 05:29
• Resolved: 23/Apr/20 05:29

Description

Please refer to https://github.com/cbeust/jcommander/issues/253.
If you define a list as argument to be parsed with an IStringConverter, JCommander will create a List<List<String>> instead of a List<String>.

we should change `converter = TransformersConverter.class` to `converter = StringConverter.class, listConverter = TransformersConverter.class`.