Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/5487#discussion_r170014483 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/JobMaster.java --- @@ -447,6 +453,165 @@ public void postStop() throws Exception { return CompletableFuture.completedFuture(Acknowledge.get()); } + @Override + public CompletableFuture<Acknowledge> rescaleJob( + int newParallelism, + RescalingBehaviour rescalingBehaviour, + Time timeout) { + final ArrayList<JobVertexID> allOperators = new ArrayList<>(jobGraph.getNumberOfVertices()); + + for (JobVertex jobVertex : jobGraph.getVertices()) { + allOperators.add(jobVertex.getID()); + } + + return rescaleOperators(allOperators, newParallelism, rescalingBehaviour, timeout); + } + + @Override + public CompletableFuture<Acknowledge> rescaleOperators( --- End diff -- Yes it will be necessary, once we do rescaling for individual operators. This will be the case with the rescaling policies.
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