Unable to sent flowfiles to remote cluster. Records getting queued up at Remote processing group

[#1]

Hi,

I am trying to send flowfiles to remote cluster by creating remote processing group (RPG). RPG is able to fetch the metadata information of remote input ports from remote cluster. Below snap shot describes the sample flow created.

I see that flowfiles getting queued up at RPG. I have gone through nifi logs but could not see any errors in the logs. I would need some help to troubleshoot why nifi is unable to send flowfiles to RPG. 

Thanks.

[#2]

@AnilSST 

What is the value of the Maximum Timer Driven Thread Count?