[jira] [Created] (NIFI-11289) NiFi UI blocks on read access to FlowFile Queues

["Mark Payne (Jira)" <ji...@apache.org>]

Mark Payne created NIFI-11289:
---------------------------------

             Summary: NiFi UI blocks on read access to FlowFile Queues
                 Key: NIFI-11289
                 URL: https://issues.apache.org/jira/browse/NIFI-11289
             Project: Apache NiFi
          Issue Type: Bug
          Components: Core Framework
            Reporter: Mark Payne
            Assignee: Mark Payne


When the NiFi UI makes a request for a given Process Group or its status, the backend must obtain Read Locks on the FlowFile Queues in order to provide the information back to the UI.

This results in a sluggish UI whenever there are a lot of queues with a lot of FlowFiles flowing. And in a case where we drop huge numbers of FlowFiles or add huge numbers of FlowFiles to queue (for instance, as a result of SplitJson) that lock can be held for quite a while, making the UI block arbitrarily long.

The Read Locks, however, are not necessary for any of the requests that the UI makes for the canvas. They are necessary only for the Status History of the Connection/Queue. And for backward compatibility we should also make it available to Reporting Tasks.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)