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author | DEBORAH SIEGEL <deborahsiegel@DEBORAHs-MacBook-Pro.local> | 2015-03-02 10:15:32 -0800 |
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committer | Reynold Xin <rxin@databricks.com> | 2015-03-02 10:15:32 -0800 |
commit | e7d8ae444fead27fe85a879f2f7a4cfdd8c47b16 (patch) | |
tree | f477c3b649d08aa5af273699b206fb93ab5e1508 /docs/graphx-programming-guide.md | |
parent | 9ce12aaf283a2793e719bdc956dd858922636e8d (diff) | |
download | spark-e7d8ae444fead27fe85a879f2f7a4cfdd8c47b16.tar.gz spark-e7d8ae444fead27fe85a879f2f7a4cfdd8c47b16.tar.bz2 spark-e7d8ae444fead27fe85a879f2f7a4cfdd8c47b16.zip |
aggregateMessages example in graphX doc
Examples illustrating difference between legacy mapReduceTriplets usage and aggregateMessages usage has type issues on the reduce for both operators.
Being just an example- changed example to reduce the message String by concatenation. Although non-optimal for performance.
Author: DEBORAH SIEGEL <deborahsiegel@DEBORAHs-MacBook-Pro.local>
Closes #4853 from d3borah/master and squashes the following commits:
db54173 [DEBORAH SIEGEL] fixed aggregateMessages example in graphX doc
Diffstat (limited to 'docs/graphx-programming-guide.md')
-rw-r--r-- | docs/graphx-programming-guide.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/graphx-programming-guide.md b/docs/graphx-programming-guide.md index 28bdf81ca0..c601d793a2 100644 --- a/docs/graphx-programming-guide.md +++ b/docs/graphx-programming-guide.md @@ -663,7 +663,7 @@ val graph: Graph[Int, Float] = ... def msgFun(triplet: Triplet[Int, Float]): Iterator[(Int, String)] = { Iterator((triplet.dstId, "Hi")) } -def reduceFun(a: Int, b: Int): Int = a + b +def reduceFun(a: String, b: String): String = a + " " + b val result = graph.mapReduceTriplets[String](msgFun, reduceFun) {% endhighlight %} @@ -674,7 +674,7 @@ val graph: Graph[Int, Float] = ... def msgFun(triplet: EdgeContext[Int, Float, String]) { triplet.sendToDst("Hi") } -def reduceFun(a: Int, b: Int): Int = a + b +def reduceFun(a: String, b: String): String = a + " " + b val result = graph.aggregateMessages[String](msgFun, reduceFun) {% endhighlight %} |