Github user paul-rogers commented on the issue:
https://github.com/apache/drill/pull/1011
@arina-ielchiieva, turned out that there were unneeded dependencies in the
DoY additions to the drill-root pom.xml file. Removed these and the json.org
warnings went away.
Please take a look at the new commits. If all looks good, I'll squash
commits to prepare for merging into master. ---
