GitHub user juliuszsompolski opened a pull request:
https://github.com/apache/spark/pull/22268
[DOC] Fix comment on SparkPlanGraphEdge
## What changes were proposed in this pull request?
`fromId` is the child, and `toId` is the parent, see line 127 in
`buildSparkPlanGraphNode` above.
The edges in Spark UI also go from child to parent.
## How was this patch tested?
Comment change only. Inspected code above. Inspected how the edges in Spark
UI look like.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/juliuszsompolski/apache-spark
sparkplangraphedgedoc
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22268.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 #22268
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commit e405f699e51058f8f61a2243862bcd8c6a6013c4
Author: Juliusz Sompolski <julek@...>
Date: 2018-08-29T12:19:10Z
update doc
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