GitHub user mangolzy opened a pull request:
https://github.com/apache/spark/pull/20899
fix bug in sendMessage() of pregel implementation
## What changes were proposed in this pull request?
Iterator((edge.dstId, edge.srcAttr._2 * edge.attr))
->
Iterator((edge.dstId, edge.srcAttr._1 * edge.attr))
## How was this patch tested?
Since edge.srcAttr._2 is used to compare with tol, it should be the (newPR
- oldPR), but in the sendMessage, the origin code send it as part of the
message, instead it should be the newPR which is edge.srcAttr._1.
Please review http://spark.apache.org/contributing.html before opening a
pull request.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mangolzy/spark patch-1
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20899.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #20899
----
commit be567d83c4069a0592fb61464c795d123bd34116
Author: mangolzy <ziyanliangcanton@...>
Date: 2018-03-24T13:32:52Z
fix bug in sendMessage() of pregel implementation
Iterator((edge.dstId, edge.srcAttr._2 * edge.attr))
->
Iterator((edge.dstId, edge.srcAttr._1 * edge.attr))
Since edge.srcAttr._2 is used to compare with tol, it should be the (newPR
- oldPR), but in the sendMessage, the origin code send it as part of the
message, instead it should be the newPR which is edge.srcAttr._1.
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