ajorgensen opened a new pull request #2831: Fix bug in dry-run argument for update command URL: https://github.com/apache/incubator-heron/pull/2831 Since list_extra_args is an array the `+=` operator deconstructs a string and add each character as an individual array element. This made it so when the update command it would not detect if it was in dry-run mode and always run the update command. By encapsulating the `--dry-run` string in an list it is properly added as an argument and runs with the expected behavior.
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