1. Apache Hadoop. http://hadoop.apache.org/. Apache Hadoop. http://hadoop.apache.org/.
2. Apache Knox. http://knox.apache.org/. Apache Knox. http://knox.apache.org/.
3. Apache Ranger. http://ranger.apache.org/. Apache Ranger. http://ranger.apache.org/.
4. Apache Sentry. http://sentry.apache.org/. Apache Sentry. http://sentry.apache.org/.
5. Privacy Aware Access Control for Big Data: A Research Roadmap