NiFi PutHDFS Login Failure using kerberos

[#1]

I am getting a login failure when trying to use the PutHDFS processor.

These are the things I have verified:

• nifi.kerberos.krb5.file is set correctly
• nifi account has read permissions to keytab and krb5.conf
• I am able to kinit using the keytab/principal from the nifi account

Environment is HDF 3.0.1 (NiFi 1.2) to HDP 2.6.x

Is there something I am missing?

[#2]

@Benjamin Hopp

Did you get this resolved? I'm facing the exact same issue as you are in this thread.

[#3]

@Chad Woodhead

Yes, it was resolved. But I don't have a good explanation. It actually resolved itself by simply restarting the NiFi process on all nodes. After the restart they all connected and worked as expected.

[#4]

@Benjamin Hopp

Interesting. I performed several restarts and kept receiving the error "Unable to obtain password from user". I then decided to perform a full stop, wait a couple minutes, then start (I have 2 NiFi nodes) and now its working. Very strange...

[#5]

@Benjamin Hopp @Chad Woodhead

I had the exact same issue and tried bringing down both of my two NiFi nodes, waiting a few minutes, and brought them back online. Then I tried turning on the PutHDFS processor and it worked properly.

Has anyone figured out why this solves the issue or what is causing this problem?