What happened Brahmin vadhyar/purohit/pandit in Kerala?
Brahmin vadhyar/purohit/pandit caste name changed into
Ezhavathy/Kavutheeya/komaram

Vadhyar/pandit/purohit means one who know four vedas(rig,yajur,sama &atharva) Now vadhyar/purohit/pandit in Kerala is known as Ezhavathy/ezhava vazhthy/kavutheeya/komarm etc.Some people of these caste chosen barber job. The reason was ,when they lost their jobs(yagnas,poojas etc)they turned to barber jobs they had the eperience of hair cutting and shaving when do a yagna/pooja.(we can see it in Atharva veda).In Atharv vrda one yagna/pooja starts with cutting hair and shaving .These experience lead them barber jobs