Hi, The change to remove --enable-announce flag as one of the parameters to the executor ( https://github.com/apache/aurora/commit/9faec2f0544e6165357105e4cd01c682cb316a00) breaks backwards compatibility. There is no easy way to roll out this upgrade as the previous version requires the flag and the new version won't work with the flag. I am guessing that this is an unintended consequence of twitter.common.app rejecting unknown arguments. The --enable-announce flag needs to be made optional before removing it from the code.
Regards, Kunal
