Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/4340#discussion_r127504763
--- Diff:
flink-java/src/main/java/org/apache/flink/api/java/io/PrintingOutputFormat.java
---
@@ -18,12 +18,16 @@
package org.apache.flink.api.java.io;
-import java.io.PrintStream;
-
import org.apache.flink.annotation.PublicEvolving;
import org.apache.flink.api.common.io.RichOutputFormat;
import org.apache.flink.configuration.Configuration;
+import java.io.PrintStream;
+
+/**
+ * Output format that prints results into underlying {@link PrintStream}.
--- End diff --
I would reword this to mention stdout/stderr; the usage of `PrintStream` is
an (unimportant) implementation detail.
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