Github user fhueske commented on a diff in the pull request: https://github.com/apache/flink/pull/1581#discussion_r52496326 --- Diff: flink-examples/flink-examples-batch/src/main/java/org/apache/flink/examples/java/clustering/KMeans.java --- @@ -105,119 +110,127 @@ public static void main(String[] args) throws Exception { .groupBy(0).reduce(new CentroidAccumulator()) // compute new centroids from point counts and coordinate sums .map(new CentroidAverager()); - + // feed new centroids back into next iteration DataSet<Centroid> finalCentroids = loop.closeWith(newCentroids); - + DataSet<Tuple2<Integer, Point>> clusteredPoints = points - // assign points to final clusters - .map(new SelectNearestCenter()).withBroadcastSet(finalCentroids, "centroids"); - + // assign points to final clusters + .map(new SelectNearestCenter()).withBroadcastSet(finalCentroids, "centroids"); + // emit result - if (fileOutput) { - clusteredPoints.writeAsCsv(outputPath, "\n", " "); + if (params.has("output")) { + clusteredPoints.writeAsCsv(params.get("output"), "\n", " "); // since file sinks are lazy, we trigger the execution explicitly env.execute("KMeans Example"); - } - else { + } else { clusteredPoints.print(); --- End diff -- Add a message saying something like "Printing result to std-out. Use --output to specify output path."
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