Nifi not starting

[Anil Rai <an...@gmail.com>]

Hello,

I have 2 clarifications.

We have a 3 node cluster (3 zookeeper and 3 nodes). When we restart the
cluster (in no particular order) and when the flow are running, the cluster
does not start and we see the attached error in the logs. This has happened
to us couple of time.
Do we have to restart the cluster in any particular order? and also should
we stop all the flows before we restart? please let us know.

Secondly, is there a way to track a transaction flowing through a flow from
start to end out of the box? Basically I would like to know how many
transaction were processed by a flow in an hour/day or week

Thanks
Anil