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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