question Re: Getting ThreadPoolRequestReplicator warning in NiFi-1.1.0 in Support Questions

Getting ThreadPoolRequestReplicator warning in NiFi-1.1.0

Adda_Fuentes2 — Wed, 25 Jan 2017 06:32:03 GMT

Hello,

I recently began receiving this warning in my nifi cluster:

WARN [Replicate Request Thread-10] o.a.n.c.c.h.r.ThreadPoolRequestReplicator Response time from node was slow for each of the last 3 requests made. To see more information about timing, enable DEBUG logging for org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator.

I am using a 4 node cluster and I am running NiFi version NiFi-1.1.0. I had never seen this warning before and I am unsure of what is causing it. Does anyone have any ideas of what could be causing this sudden warning?

Re: Getting ThreadPoolRequestReplicator warning in NiFi-1.1.0

mpayne — Thu, 26 Jan 2017 05:19:15 GMT

@Adda Fuentes it is simply an indication that a specific node seems to be responding more slowly than others. If you keep seeing that warning for a specific node, then it may be worth looking into why that specific node is taking longer than the others. If you are seeing good performance and the UI is responding within a reasonable amount of time, you can ignore the warning. However, since requests are replicated across the cluster, if any of the nodes starts to behave poorly, the responsiveness of the UI can suffer. This warning is intended to point you in the right direction to find out why the application responsiveness is degrading.

Re: Getting ThreadPoolRequestReplicator warning in NiFi-1.1.0

Adda_Fuentes2 — Thu, 26 Jan 2017 05:52:07 GMT

@mpayne thanks, this clarifies a lot!