[GitHub] zhaijp opened a new pull request #7596: Release 1.7 sortPartition bug

[GitBox <gi...@apache.org>]

zhaijp opened a new pull request #7596: Release 1.7 sortPartition bug
URL: https://github.com/apache/flink/pull/7596
 
 
   ### I found a bug when I use sortPartition
   public class WordCountExample {
   	public static void main(String[] args) throws Exception {
   		final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
   		DataSet<String> text = env.fromElements("a b b b b c c");
   		DataSet<Tuple2<String,Integer>> wordCounts = text.flatMap(new LineSPlitter())
   				.groupBy(0)
   				.sum(1)
   				.sortPartition(1, Order.DESCENDING);
   				
   		wordCounts.print();
   		
   	}
   }
   
   class LineSPlitter implements FlatMapFunction<String, Tuple2<String,Integer>>{
   
   	@Override
   	public void flatMap(String line, Collector<Tuple2<String, Integer>> out) throws Exception {
   		for(String word : line.split(" ")) {
   			out.collect(new Tuple2<String, Integer>(word,1));
   		}
   	}
   	
   }
   
   ### the console show this:
   (a,1)
   (b,4)
   (c,2)
   
   
   ### when i change the elements aa bb bb bb bb cc cc the result is right：
   (bb,4)
   (cc,2)
   (aa,1)
   

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