Github user spmallette commented on the issue:
https://github.com/apache/tinkerpop/pull/904
To be clear, I don't think we can force upgrade from 2.4.x to 2.9.x as it
creates breaking changes in spark. Sadly, we don't even seem to have a route to
resolve that for 3.4.0 because even with the Spark 2.3.x bump we still only get
to jackson 2.6.x. Not sure what spark is doing with that.---
