Hisoka-X commented on code in PR #3131:
URL:
https://github.com/apache/incubator-seatunnel/pull/3131#discussion_r998870852
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seatunnel-engine/seatunnel-engine-server/src/main/java/org/apache/seatunnel/engine/server/checkpoint/TaskStatistics.java:
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@@ -42,20 +44,20 @@ public class TaskStatistics implements Serializable {
TaskStatistics(Long jobVertexId, int parallelism) {
this.jobVertexId = checkNotNull(jobVertexId, "JobVertexID");
checkArgument(parallelism > 0, "the parallelism of task <= 0");
- this.subtaskStats = new SubtaskStatistics[parallelism];
+ this.subtaskStats = Arrays.asList(new SubtaskStatistics[parallelism]);
Review Comment:
Can't use `new ArrayList<>(parallelism);`, because it will make subtaskStats
init size=0, so you can't use subtaskStats .set(4,data), it will throw
ArrayOutOfRangeException. `Arrays.asList(new SubtaskStatistics[parallelism]);`
will make init size = parallelism, and default value = null.
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