rmetzger commented on a change in pull request #15071:
URL: https://github.com/apache/flink/pull/15071#discussion_r586557298
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/adaptive/AdaptiveScheduler.java
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@@ -248,9 +250,24 @@ public AdaptiveScheduler(
declarativeSlotPool::reserveFreeSlot,
declarativeSlotPool::freeReservedSlot);
- for (JobVertex vertex : jobGraph.getVertices()) {
- if (vertex.getParallelism() ==
ExecutionConfig.PARALLELISM_DEFAULT) {
- vertex.setParallelism(1);
+ if (configuration.get(JobManagerOptions.SCHEDULER_MODE)
+ == SchedulerExecutionMode.REACTIVE) {
+ LOG.info("Modifying job parallelism for running in reactive
mode.");
+ for (JobVertex vertex : jobGraph.getVertices()) {
+ if (vertex.getMaxParallelism() ==
JobVertex.MAX_PARALLELISM_DEFAULT) {
+
vertex.setParallelism(Transformation.UPPER_BOUND_MAX_PARALLELISM);
+
vertex.setMaxParallelism(Transformation.UPPER_BOUND_MAX_PARALLELISM);
+ } else {
+ vertex.setParallelism(vertex.getMaxParallelism());
+ }
+ }
+ } else {
+ // non-reactive mode (test execution with adaptive scheduler):
ensure parallelism is set
+ // for all vertices.
+ for (JobVertex vertex : jobGraph.getVertices()) {
+ if (vertex.getParallelism() ==
ExecutionConfig.PARALLELISM_DEFAULT) {
+ vertex.setParallelism(1);
+ }
}
Review comment:
This is just an explanation for my thinking, not a counter-argument: The
reason why I've put this here was because I assume that reactive mode is the
only mode currently supported by the adaptive scheduler, and putting it here is
the simplest approach (KISS-style). Once the requirements change, we can move
this to an outside location.
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