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Flink dynamic scaling 1.5

This is regarding dynamic rescaling in Flink 1.5

I am using Yarn for running Flink jobs. I start these jobs with a static
resource. Is there any option to scale out these job by itself in specific
conditions like if there's a memory issues.

In Flink 1.5 release notes -

Applications can be rescaled without manually triggering a savepoint. Under 
the hood, Flink will still take a savepoint, stop the application, and 
rescale it to the new parallelism.

This means that I will have to monitor my jobs memory and will have to
trigger rescale manually. Is these any workaround to handle this.

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