title: Authentication and Security in Hadoop
body: <p>We are building system which queries Hive table. Our Service Layer will construct Hive Query based on User Selection on UI, We have some security related questions over here</p>
  
  <p>•   Is it Ok to pass Hive Dynamic Query constructed at service layer to a UDF/HQL in Hive ?
  •   Are there any SQL Injection kind of Scenarios occurs in Hive, We are Hive 0.14, it contains delete and update statements.
  •   How can we manage Role Authorization to access table only like perform Read instead of Write and Delete. Is there way to manage permission for Hive table. Or will it be managed by HCatalog?</p>