chucheng92 commented on code in PR #21464:
URL: https://github.com/apache/flink/pull/21464#discussion_r1056014959
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flink-core/src/main/java/org/apache/flink/api/connector/source/SplitEnumeratorContext.java:
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@@ -126,6 +126,16 @@ default void assignSplit(SplitT split, int subtask) {
*/
void signalNoMoreSplits(int subtask);
+ /**
+ * Signals a subtask that it will not receive split for current source,
but it will receive
+ * split for next sources. A common scenario is HybridSource. This
indicates that task not truly
+ * read finished.
+ *
+ * @param subtask The index of the operator's parallel subtask that shall
be signaled it will
+ * receive splits later.
+ */
+ default void signalIntermediateNoMoreSplits(int subtask) {}
Review Comment:
@zhuzhurk Yes. SplitEnumeratorContext is a Public api. i add it with default
method to avoid impact. We can not use `realContext instanceOf
SourceCoordinatorContext` directly, HybridSourceSplitEnumerator is in
flink-connector-base, SourceCoordinatorContext is in flink-runtime, how can we
reference it? using class name or add runtime dependency both are ugly. Is
there a more elegant way ?
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