Github user rmetzger commented on a diff in the pull request:
https://github.com/apache/flink/pull/672#discussion_r30330465
--- Diff: flink-java/src/main/java/org/apache/flink/api/java/DataSet.java
---
@@ -1337,11 +1336,16 @@ public long count() throws Exception {
/**
* Writes a DataSet to the standard output stream (stdout).<br/>
* For each element of the DataSet the result of {@link
Object#toString()} is written.
- *
- * @return The DataSink that writes the DataSet.
*/
- public DataSink<T> print() {
- return output(new PrintingOutputFormat<T>(false));
+ public void print() {
+ try {
+ List<T> elements = this.collect();
+ for (T e: elements) {
+ System.out.println(e);
+ }
+ } catch (Exception e) {
+ System.out.println("Could not retrieve values for
printing: " + e);
--- End diff --
This prints only the message. I would suggest to stringify the exception
because the error messages coming from `collect()` might come from the remote
cluster
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