zhijiangW commented on a change in pull request #13209:
URL: https://github.com/apache/flink/pull/13209#discussion_r484164187
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File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/graph/StreamEdge.java
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@@ -136,6 +172,14 @@ public void setPartitioner(StreamPartitioner<?>
partitioner) {
this.outputPartitioner = partitioner;
}
+ public void setBufferTimeout(long bufferTimeout) {
+ this.bufferTimeout = bufferTimeout;
Review comment:
Move `checkAndResetBufferTimeout` into `StreamEdge` seems not possible,
because we can not only rely on internal `StreamEdge#outputPartitioner` to
generate `ResultPartitionType` which also relies on `StreamGraph`, see
`StreamingJobGraphGenerator#determineResultPartitionType`. Also it seems not
good to pass the generate `ResultPartitionType` as argument into
`StreamEdge#setBufferTimeout`.
I also did not think through why we need to check the current value not `-1`
before setting. If we want to prevent duplicated calling `#setBufferTimeout`,
then we should check whether the current value was already different from the
initial value (`0`) before setting. But I do not think it is necessary to limit
the caller here. In general way, it is possible to only check the value of
passed argument `bufferTimeout >= -1`.
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