• [cygnus-common][HDFSSink] Check attribute value before use it
• [cygnus-common][PostgreSQL][MySQL] catch exception close invalid connection
• [cygnus-common] Upgrade MongoDB driver from 3.0.4 to 3.11.0
• [cygnus-common] Fix for index name creation in Mongo and STH Sinks (#1714)
• [cygnus-ngsi][NGSISink] Catch generic exception and rollback in transaction