hddong opened a new pull request #1110: [HUDI-416]improve hint information for cli URL: https://github.com/apache/incubator-hudi/pull/1110 ## What is the purpose of the pull request Right now, cli always give error information: `Command 'desc' was found but is not currently available (type 'help' then ENTER to learn about this command)`, but it is confused to user. We can give a hint clearly like: `Command failed java.lang.NullPointerException: There is no hudi dataset. Please use connect command to set dataset first` ## Brief change log *(for example:)* - *use `exception` instead of `CliAvailabilityIndicator`* ## Verify this pull request This pull request is a trivial rework / code cleanup without any test coverage. ## Committer checklist - [ ] Has a corresponding JIRA in PR title & commit - [ ] Commit message is descriptive of the change - [ ] CI is green - [ ] Necessary doc changes done or have another open PR - [ ] For large changes, please consider breaking it into sub-tasks under an umbrella JIRA.
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