Merge pull request #44 from Pardot/bigdata-happyland

Bigdata happyland
[PDT-5578] Multi threaded table scanner
Merge pull request #45 from Pardot/mf/scanner

[PDT-5578] Multi threaded table scanner
[PDT-5578] Add setup and cleanup to abstract visitor
Merge remote-tracking branch 'origin/master' into mf/scanner
Merge pull request #46 from Pardot/mf/scanner

Mf/scanner
Remove logging and add failsafe to fetchIfNecessary