AHeise commented on code in PR #25292:
URL: https://github.com/apache/flink/pull/25292#discussion_r1758906870
##########
flink-runtime/src/main/java/org/apache/flink/streaming/runtime/operators/sink/SinkWriterOperator.java:
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@@ -195,12 +231,15 @@ public void processWatermark(Watermark mark) throws
Exception {
@Override
public void endInput() throws Exception {
- endOfInput = true;
- sinkWriter.flush(true);
- emitCommittables(Long.MAX_VALUE);
+ if (!endOfInput) {
+ endOfInput = true;
Review Comment:
I added the assertion. It can't hurt because we may have upstream operators
that misbehave (custom operators).
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