Github user fhueske commented on a diff in the pull request: https://github.com/apache/flink/pull/1838#discussion_r59751421 --- Diff: flink-tests/src/test/java/org/apache/flink/test/javaApiOperators/CustomDistributionITCase.java --- @@ -175,6 +175,77 @@ else if (pIdx > 0 && pIdx < dist.getParallelism() - 1) { env.execute(); } + @Test + public void testPartitionKeyLessDistribution() throws Exception{ + /* + * Test the number of keys less than the number of distribution fields + */ + + ExecutionEnvironment env = ExecutionEnvironment.createLocalEnvironment(); + + DataSet<Tuple3<Integer, Long, String>> input1 = CollectionDataSets.get3TupleDataSet(env); + final TestDataDist2 dist = new TestDataDist2(); + + env.setParallelism(dist.getParallelism()); + + DataSet<Boolean> result = DataSetUtils + .partitionByRange(input1, dist, 0) + .mapPartition(new RichMapPartitionFunction<Tuple3<Integer, Long, String>, Boolean>() { + + @Override --- End diff -- Can you adjust the indention to be as in the other test methods?
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