pnowojski commented on code in PR #23908:
URL: https://github.com/apache/flink/pull/23908#discussion_r1441676954
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flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/CheckpointStatsTracker.java:
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@@ -86,9 +88,10 @@ public class CheckpointStatsTracker {
private final JobID jobID;
private final MetricGroup metricGroup;
+ private int totalNumberOfSubTasks;
- /** The latest restored checkpoint. */
- @Nullable private RestoredCheckpointStats latestRestoredCheckpoint;
+ private Optional<JobInitializationMetricsBuilder>
jobInitializationMetricsBuilder =
Review Comment:
Matter of preferences. `Optional`'s compile time checks > not very usable
`@Nullable`'s warnings in our code base.
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