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Review request for Ambari and Andrii Tkach. Bugs: AMBARI-19921 https://issues.apache.org/jira/browse/AMBARI-19921 Repository: ambari Description ------- * Open Dashboard * Click on "Delete widget links" as fast as you can * JS-errors appears: {noformat} Uncaught Error: <DS.StateManager:ember6511> could not respond to event didChangeData in state rootState.loaded.updated.uncommitted. {noformat} {noformat} Uncaught TypeError: Cannot read property 'get' of null {noformat} Diffs ----- ambari-web/app/templates/main/dashboard/widgets.hbs 8e04f1c ambari-web/app/views/main/dashboard/widget.js cacac1a ambari-web/app/views/main/dashboard/widgets.js 0c6b7aa ambari-web/test/views/main/dashboard/widget_test.js 8582ad0 ambari-web/test/views/main/dashboard/widgets_test.js b2d154b Diff: https://reviews.apache.org/r/56441/diff/ Testing ------- 20338 passing (22s) 153 pending Thanks, Oleg Nechiporenko