Github user nchammas commented on the pull request: https://github.com/apache/spark/pull/58#issuecomment-36481775 I opened the request in JIRA on the assumption that a master-only cluster is a usable and valid cluster to work with. If that is not the case, then yeah I guess we should instead modify `spark-ec2` to not let you launch slave-less clusters. This still leaves Josh's use case unaddressed though. Say the slaves are somehow lost. The user should still be able to login to the master to pull logs and whatnot.
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---