Thesharing commented on a change in pull request #16856:
URL: https://github.com/apache/flink/pull/16856#discussion_r697295044
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File path:
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/strategy/ConsumedPartitionGroup.java
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@@ -19,22 +19,32 @@
package org.apache.flink.runtime.scheduler.strategy;
import org.apache.flink.annotation.VisibleForTesting;
+import org.apache.flink.runtime.jobgraph.IntermediateDataSetID;
import org.apache.flink.runtime.jobgraph.IntermediateResultPartitionID;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
+import static org.apache.flink.util.Preconditions.checkArgument;
+
/** Group of consumed {@link IntermediateResultPartitionID}s. */
public class ConsumedPartitionGroup implements
Iterable<IntermediateResultPartitionID> {
private final List<IntermediateResultPartitionID> resultPartitions;
private final AtomicInteger unfinishedPartitions;
+ private final IntermediateDataSetID intermediateDataSetID;
+
private ConsumedPartitionGroup(List<IntermediateResultPartitionID>
resultPartitions) {
+ checkArgument(
+ resultPartitions.size() > 0,
+ "The size of result partitions in a ConsumedPartitionGroup
should be larger than 0.");
+
Review comment:
> I am wondering whether we should also check as precondition that all
`resultPartitions` have the same `IntermediateDataSetID`.
Sorry that I misunderstood the meaning of the check. The complexity of this
sanity check is O(n). Although it will slightly increase the time cost on
initialization of DefaultExecutionGraph, I think it's tolerable. I've updated
the commit and squashed all the commits. Let's wait for CI to give green.
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