zhuzhurk commented on a change in pull request #8430: [FLINK-12068] [runtime]
Backtrack failover regions if intermediate results are unavailable
URL: https://github.com/apache/flink/pull/8430#discussion_r284684306
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/failover/flip1/RestartPipelinedRegionStrategy.java
##########
@@ -165,6 +181,33 @@ private void buildOneRegionForAllVertices() {
for (FailoverVertex vertex : topology.getFailoverVertices()) {
vertexToRegionMap.put(vertex.getExecutionVertexID(),
region);
}
+
+ buildRegionInputsAndOutputs();
+ }
+
+ private void buildRegionInputsAndOutputs() {
+ for (FailoverRegion region : regions.keySet()) {
+ IdentityHashMap<FailoverRegion, Object> consumers = new
IdentityHashMap<>();
+ Set<IntermediateResultPartitionID> inputs = new
HashSet<>();
+ Set<ExecutionVertexID> consumerVertices = new
HashSet<>();
+ Set<FailoverVertex> regionVertices =
region.getAllExecutionVertices();
+ regionVertices.forEach(v -> {
Review comment:
I tried the merged logic and find the region building becomes even slower.
I think this is due to the merged logic saved some iteration overhead, but
added some more work, including building some legacy relations and later
deprecating them in region merging.
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