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changed in this file?","created_at":"2016-04-19T17:33:07Z","updated_at":"2016-04-19T17:33:07Z","html_url":"https://github.com/apache/reef/pull/948#discussion_r60274788","pull_request_url":"https://api.github.com/repos/apache/reef/pulls/948","_links":{"self":{"href":"https://api.github.com/repos/apache/reef/pulls/comments/60274788"},"html":{"href":"https://github.com/apache/reef/pull/948#discussion_r60274788"},"pull_request":{"href":"https://api.github.com/repos/apache/reef/pulls/948"}}},"pull_request":{"url":"https://api.github.com/repos/apache/reef/pulls/948","id":66214582,"html_url":"https://github.com/apache/reef/pull/948","diff_url":"https://github.com/apache/reef/pull/948.diff","patch_url":"https://github.com/apache/reef/pull/948.patch","issue_url":"https://api.github.com/repos/apache/reef/issues/948","number":948,"state":"open","locked":false,"title":"[REEF-1335] Create State Machine for Fault 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StateTransition as a generic, it will be shared with Task state\r\n* Adding SystemState to define state transitions\r\n* Adding test cases\r\n\r\nNotes:\r\n* Test file will be moved to Driver.Tests once it is merged with REEF-1327.*=\r\n* The StateTransition as a generic will be used in REEF-1327 once merged.\r\n\r\nJIRA: [REEF-1335](https://issues.apache.org/jira/browse/REEF-1335)\r\n\r\nThis closes 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