Hi Sentry Dev, A couple of month ago, we created a viewfs feature request (SENTRY-1627). Viewfs <https://hadoop.apache.org/docs/r2.7.0/hadoop-project-dist/hadoop-hdfs/ViewFs.html> is critical in supporting the rapid growth / expansion of our HDFS clusters. Since then, we have implemented viewfs support on top of Sentry cdh5-1.5.1_5.7.2. The implementation is currently in the process of being rolled out to our production. At the high level, the change involves patching the Sentry service thrift API so that NN plugin of each HDFS clusters can identify itself to the service. In turn, the sentry service converts viewfs paths to HDFS paths that the requesting NN plugin can understand.
As you are redesigning HA for sentry and moving in-memory states to database, it would be great that you support viewfs to begin with, or be aware of the need for viewfs support at a later stage. Thanks Qianbo Huai Uber Data Infra Engineering
