Hi , We have requirement to upgrade version of Nifi-cluster without incurring service downtime or without affecting data-loss. For that, is it necessary to suspend the current template running in Nifi before start of the version upgrade activity? If yes, whether there is any programmatic way (i.e. through REST call or some other java API based mechanism) to suspend and resume the complete template running in Nifi? If your answer is no to the former question, can you please point us to the relevant design documentation in Nifi internal which enables this nice functionality i.e. version upgrade possibility without service downtime and data loss in Nifi-cluster.
Thanks & Regards, Ganesh.B
