[NIFI-4153] Site-to-Site causing "There are too many outstanding HTTP requests" error message

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.2.0, 1.3.0
• Fix Version/s: 1.4.0
• Assignee: Mark Payne
• Reporter: Mark Payne
• Created: 05/Jul/17 20:28
• Updated: 06/Jul/17 14:13
• Resolved: 06/Jul/17 14:13

Description

When using site-to-site in cluster, we sometimes see the following error message showing up in the log:

2017-07-05 16:11:12,452 INFO [NiFi Web Server-318] o.a.n.w.a.c.IllegalStateExceptionMapper java.lang.IllegalStateException: There are too many outstanding HTTP requests with a total 100 outstanding requests. Returning Conflict response.

Once this occurs, it keeps occurring, sometimes making the UI unusable until the nodes are restarted.

Issue Links

• links to: GitHub Pull Request #1980