[Secure HDFS] Running List of HDFS Issues

[ifilonenko]

This will act as a running list of issues that need to be resolved for a stable Secure HDFS solution. @kimoonkim @liyinan926 add more which you feel are appropriate

• [ ] Resolution of Yarn configs in K8S world
• [ ] Unit test that simulates file system for keytab resolution in Secure HDFS
• [ ] Having KerberosBootstrap be passed into the keytab resolution step
• [ ] Integration test for HDFS File Mounting A PR will be released for this shortly as part of #514
• [ ] Integration test for Secure HDFS interaction A PR will be released for this shortly as part of #514
• [ ] Secure HDFS Renewal Service

If all are checked, we may begin merging with upstream

[kimoonkim]

@ifilonenko Thanks for writing this list. I would add one more item:

• [ ] Let the driver and executors discover and pick up new tokens added by the token renew service.