lindong28 commented on code in PR #22931:
URL: https://github.com/apache/flink/pull/22931#discussion_r1278993694
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flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/CheckpointCoordinator.java:
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@@ -183,6 +189,15 @@ public class CheckpointCoordinator {
/** A handle to the current periodic trigger, to cancel it when necessary.
*/
private ScheduledFuture<?> currentPeriodicTrigger;
+ /**
+ * The timestamp (via {@link Clock#relativeTimeMillis()}) when the next
checkpoint will be
+ * triggered.
+ *
+ * <p>If it's value is {@link Long#MAX_VALUE}, it means there is not a
next checkpoint
+ * scheduled.
+ */
+ private volatile long nextCheckpointTriggeringRelativeTime;
Review Comment:
As discussed offline, we agree it is useful to annotate this variable with
`@GuardedBy("lock")`.
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