zymap commented on issue #5615: Fix hangs when type invalid args at command-line URL: https://github.com/apache/pulsar/pull/5615#issuecomment-555313787 @sijie It will hang when we using command-line tools. The process hangs because there has a RuntimeException thrown and we are not handling. I found we exit the `PulsarAdminTool` by the `System.exit`. When we parse an unknown command it will throw a RuntimeException. We need a boolean value to check should we exit. When it threw an Exception, there is no value to return so it can not exit as usual.
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