Robert Kanter created OOZIE-2406:
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Summary: Completely rewrite GraphGenerator code
Key: OOZIE-2406
URL: https://issues.apache.org/jira/browse/OOZIE-2406
Project: Oozie
Issue Type: New Feature
Affects Versions: 4.2.0
Reporter: Robert Kanter
The Web UI currently generates a graph of the workflow DAG as a png image that
it can show to the user ({{GraphGenerator}} class). Unfortunately, there are a
number of downsides to the current implementation:
# The image is generated server-side, which doesn't scale well and eats up lots
of memory
#- To help combat this issue, we only generate graphs for workflows with less
than 25 nodes
# It's slow
# It uses a library ({{net.sf.jung}} from http://jung.sourceforge.net), which
hasn't been updated since 2010.
#- This library also has a dependency on a fork of Commons-Collections
({{net.sourceforge.collections}} from
http://sourceforge.net/projects/collections/), which similarly hasn't been
updated since 2010. This is a problem because we can't update
Commons-Collections when there are security concerns such as COLLECTIONS-580
(though Oozie is *not* susceptible to this attack).
It would be good to do a complete rewrite, using a different library and remove
Jung and the Commons-Collections fork. Whatever we choose, it should an svg
which will draw the image on the browser.
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