dawidwys commented on a change in pull request #17929:
URL: https://github.com/apache/flink/pull/17929#discussion_r759953306
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File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/BoundedMultiInput.java
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@@ -19,13 +19,25 @@
import org.apache.flink.annotation.PublicEvolving;
-/** Interface for the multi-input operators that can process EndOfInput event.
*/
+/**
+ * Interface for multi-input operators that need to be notified about the
logical/semantical end of
+ * input.
+ *
+ * <p><b>WARNING:</b> It is not safe to use this method to commit any
transactions or other side
+ * effects! You can use this method to e.g. flush data buffered for the given
input or implement an
+ * ordered reading from multiple inputs via {@link InputSelectable}.
Review comment:
Makes sense.
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