tillrohrmann commented on a change in pull request #9960: [FLINK-14476] Extend
PartitionTracker to support promotions
URL: https://github.com/apache/flink/pull/9960#discussion_r340544660
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/PartitionTrackerImpl.java
##########
@@ -173,12 +199,69 @@ private void internalReleasePartitionsOnTaskExecutor(
}
}
- private void
internalReleasePartitionsOnShuffleMaster(Collection<ResultPartitionDeploymentDescriptor>
partitionDeploymentDescriptors) {
- partitionDeploymentDescriptors.stream()
+ private void internalReleaseOrPromotePartitionsOnTaskExecutor(
+ ResourceID potentialPartitionLocation,
+ Collection<ResultPartitionDeploymentDescriptor>
partitionDeploymentDescriptors) {
+
+ final Set<ResultPartitionID> partitionsRequiringRpcReleaseCalls
=
+ getPartitionsToReleaseOrPromote(
+ partitionDeploymentDescriptors,
+ filterByPersistence(false));
+
+ final Set<ResultPartitionID> partitionsRequiringRpcPromoteCalls
=
+ getPartitionsToReleaseOrPromote(
+ partitionDeploymentDescriptors,
+ filterByPersistence(true));
Review comment:
Instead of iterating twice over the stream, one could partition the stream
once into two parts:
```
final Map<Boolean, Set<ResultPartitionID>> splitStream =
partitionDeploymentDescriptors.stream()
.filter(PartitionTrackerImpl::excludePartitionsWithoutLocalResources)
.collect(partitioningBy(
resultPartitionDeploymentDescriptor ->
resultPartitionDeploymentDescriptor.getPartitionType().isPersistent(),
Collectors.mapping(PartitionTrackerImpl::getResultPartitionId,
Collectors.toSet())));
final Set<ResultPartitionID> partitionsRequiringRpcReleaseCalls
= splitStream.get(false);
final Set<ResultPartitionID> partitionsRequiringRpcPromoteCalls
= splitStream.get(true);
```
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