JunRuiLee commented on code in PR #24771:
URL: https://github.com/apache/flink/pull/24771#discussion_r1612900377
##########
flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/JobMaster.java:
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@@ -1012,12 +1013,12 @@ public
CompletableFuture<Collection<PartitionWithMetrics>> getPartitionWithMetri
timeout.toMillis(),
expectedPartitions);
- return
fetchedPartitionsWithMetrics.values();
+ return new
ArrayList<>(fetchedPartitionsWithMetrics.values());
Review Comment:
Because the values() method of HashMap returns a collection that is not
serializable.
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