You cannot change the size/trigger count while a job is running.
For this to work you will have to take a savepoint, modify the
parameters and reload from the savepoint.
On 11.09.2017 09:27, victor.reut wrote:
Hi,
I want to have an opportunity to update timeWindow size and trigger value in
KeyedStream dynamically at runtime. For example, I have such a piece of
code:
DataStream<SampleObject> stream = env.addSource(new
FlinkKafkaConsumer09<>(TOPIC, new JSONDeserializer(), properties));
Integer numMinutes = ...
Integer triggersCount = ...
stream.keyBy("key")
.timeWindow(Time.minutes(numMinutes))
.trigger(CountTrigger.of(triggersCount))
.reduce(new MetricsReduceFunction() , new
MetricsTimeWindowReduceFunction()).print();
If I just change the values of variables numMinutes and triggersCount, Flink
does not update them. Also I haven't found a good solution in google.
Does anybody know how to solve this issue?
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