Hi @Shishir Jaiswal, Assuming HDP components on the Edge nodes such as clients and Knox then mixed versions are not supported. Knox for example only supports specific versions of an Hadoop service (see section 2.8.1.2 in http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.5.0/bk_security/bk_security-20160829.pdf). Mixed OS versions do most times not affect things as long as it's fullfil all requirements around libraries, JVM versions etc. /Best regards, Mats ... View more