[jira] [Created] (NIFI-5241) When calculating stats for components, use synchronized methods instead of atomic variables

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

Mark Payne created NIFI-5241:
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             Summary: When calculating stats for components, use synchronized methods instead of atomic variables
                 Key: NIFI-5241
                 URL: https://issues.apache.org/jira/browse/NIFI-5241
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Core Framework
            Reporter: Mark Payne
            Assignee: Mark Payne


Currently, the EventSumValue that is used to calculate stats for components, such as bytes in, bytes out, etc. using AtomicLong's and AtomicInteger's, etc to keep track of values. This made sense at first when there were only a few stats. Now, however, they hold about 17 different values and the atomic updates / atomic reads are more expensive than a synchronized method would be. This can cause sluggishness in the UI after the instance has been running for a while, especially if there are a lot of processors.



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