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

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.7.0
• Component/s: Core Framework
• Assignee: Mark Payne
• Reporter: Mark Payne
• Created: 25/May/18 19:25
• Updated: 07/Jun/18 13:17
• Resolved: 07/Jun/18 13:17

Description

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.

Issue Links

• links to: GitHub Pull Request #2752