[SPARK-4932] Add help comments in Analytics

Trivial modifications for usability. Author: Takeshi Yamamuro <[email protected]> Closes #3775 from maropu/AddHelpCommentInAnalytics and squashes the following commits: fbea8f5 [Takeshi Yamamuro] Add help comments in Analytics
apache · Dec 23, 2014 · 9c251c5 · 9c251c5
1 parent dd15536
commit 9c251c5
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/examples/src/main/scala/org/apache/spark/examples/graphx/Analytics.scala b/examples/src/main/scala/org/apache/spark/examples/graphx/Analytics.scala
@@ -33,6 +33,10 @@ object Analytics extends Logging {
     if (args.length < 2) {
       System.err.println(
         "Usage: Analytics <taskType> <file> --numEPart=<num_edge_partitions> [other options]")
+      System.err.println("Supported 'taskType' as follows:")
+      System.err.println("  pagerank    Compute PageRank")
+      System.err.println("  cc          Compute the connected components of vertices")
+      System.err.println("  triangles   Count the number of triangles")
       System.exit(1)
     }