StefanRRichter commented on a change in pull request #8442: [FLINK-12483]
Support (legacy) SourceFunction as special case in the mailbox model for stream
tasks
URL: https://github.com/apache/flink/pull/8442#discussion_r283891164
##########
File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/SourceStreamTask.java
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@@ -45,6 +45,8 @@
public class SourceStreamTask<OUT, SRC extends SourceFunction<OUT>, OP extends
StreamSource<OUT, SRC>>
extends StreamTask<OUT, OP> {
+ private static final Runnable SOURCE_POISON_LETTER = () -> {};
Review comment:
I think that would be to wrong place: this letter is not special to the
mailbox, it is only special to this task.
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