Node failure in nifi

[#1]

How Node failure is handled in Nifi ? In case it is not handled automatically , how can it be handled gracefully so that there is no data loss and minimal down time?

[#2]

I understand that there are posts explaining the situation (https://community.hortonworks.com/questions/142788/has-data-ha-across-nifi-nodes-be-implemented.html), but they are very old , Any new development happened in this time ?