Merge pull request #1513 from marcel-blonk/PLFM-2580

adding logging to debug hudson failure
Merge pull request #1514 from marcel-blonk/PLFM-2580

removing logging for debugging
Merge pull request #1515 from marcel-blonk/PLFM-2580

test fix
invalidate caches if any row change gets deleted
Merge remote-tracking branch 'upstream/develop' into PLFM-2580