[jira] [Created] (FLINK-970) Implement a first(n) operator

["Timo Walther (JIRA)" <ji...@apache.org>]

Timo Walther created FLINK-970:
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             Summary: Implement a first(n) operator
                 Key: FLINK-970
                 URL: https://issues.apache.org/jira/browse/FLINK-970
             Project: Flink
          Issue Type: New Feature
            Reporter: Timo Walther
            Assignee: Timo Walther
            Priority: Minor


It is only syntactic sugar, but I had many cases where I just needed the first element  or the first 2 elements in a GroupReduce.

E.g. Instead of

{code:java}
.reduceGroup(new GroupReduceFunction<String, String>() {
					@Override
					public void reduce(Iterator<String> values, Collector<String> out) throws Exception {
						out.collect(values.next());
					}
				})
{code}

{code:java}
.first()
{code}



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