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Aljoscha Krettek commented on FLINK-2069: ----------------------------------------- Could you maybe share your code? I now have this example code and it still produces output: {code} DataStream<String> text = env.socketTextStream("localhost", 9999); IterativeDataStream<Tuple2<String, Integer>> iterate = text.flatMap(new WordCount.Tokenizer()).iterate(); SplitDataStream<Tuple2<String, Integer>> iterEnd = iterate.map(new MapFunction<Tuple2<String, Integer>, Tuple2<String, Integer>>() { private static final long serialVersionUID = 1L; @Override public Tuple2<String, Integer> map(Tuple2<String, Integer> value) throws Exception { return new Tuple2<String, Integer>(value.f0, value.f1 + 1); } }).split(new OutputSelector<Tuple2<String, Integer>>() { private static final long serialVersionUID = 1L; @Override public Iterable<String> select(Tuple2<String, Integer> value) { if (value.f1 < 10) { return Lists.newArrayList("iter"); } else { return Lists.newArrayList("end"); } } }); iterate.closeWith(iterEnd.select("iter")); iterEnd.select("end").writeAsCsv("/Users/aljoscha/Downloads/wc-csv-out", FileSystem.WriteMode.OVERWRITE).setParallelism(1); {code} Are you using a timeout in your {{iterate()}} call? > writeAsCSV function in DataStream Scala API creates no file > ----------------------------------------------------------- > > Key: FLINK-2069 > URL: https://issues.apache.org/jira/browse/FLINK-2069 > Project: Flink > Issue Type: Bug > Components: Streaming > Reporter: Faye Beligianni > Priority: Blocker > Labels: Streaming > Fix For: 0.9 > > > When the {{writeAsCSV}} function is used in the DataStream Scala API, no file > is created in the specified path. -- This message was sent by Atlassian JIRA (v6.3.4#6332)