GitHub user uncleGen opened a pull request:
https://github.com/apache/spark/pull/16702
[SPARK-18495][UI] Document meaning of green dot in DAG visualization
## What changes were proposed in this pull request?
A green dot in the DAG visualization apparently means that the referenced
RDD is cached. This is not documented anywhere except in this [blog
post](https://databricks.com/blog/2015/06/22/understanding-your-spark-application-through-visualization.html).
It would be good if the Web UI itself documented this somehow (perhaps in
the tooltip?) so that the user can naturally learn what it means while using
the Web UI.
before pr:
after pr:
## How was this patch tested?
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/uncleGen/spark SPARK-18495
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16702.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 #16702
----
commit 619edc7ea0dd6915d1199b0f995429ea531f7739
Author: uncleGen <husty...@gmail.com>
Date: 2017-01-25T10:04:33Z
PARK-18495: Document meaning of green dot in DAG visualization
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