rfellows opened a new pull request, #10148:
URL: https://github.com/apache/nifi/pull/10148

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   # Summary
   
   [NIFI-14800](https://issues.apache.org/jira/browse/NIFI-14800)
   
   
   ### Changes Made:
   
   **1. Enhanced `formatInteger` method in `NiFiCommon` service:**
   - **Purpose:** Solve y-axis label clipping issues in charts when displaying 
large numbers
   - **Implementation:** 
     - Numbers ≥ 100,000 now use compact notation via `Intl.NumberFormat` with 
`notation: 'compact'`
     - Shows up to 2 decimal places for precision (`maximumFractionDigits: 2`)
     - Numbers < 100,000 continue using existing comma formatting
     - Examples: `100000` → `"100K"`, `1250000` → `"1.25M"`, `2750000000` → 
`"2.75B"`
   
   **2. Comprehensive test coverage:**
   - **Added:** new test cases covering:
     - Small numbers with comma formatting (0 to 99,999)
     - Large numbers with compact notation (≥ 100,000)
     - Negative number handling
     - Edge cases around the 100,000 threshold
     - Very large numbers (billions, trillions)
   
   ### Impact:
   This change directly addresses chart label clipping issues by making large 
integer labels significantly shorter while maintaining readability. The status 
history chart component will automatically benefit from this improvement since 
it uses the `formatInteger` method through its formatters.
   
   
   #### Before (labels aren't quite long enough to force clipping, but big 
enough to convey the idea)
   <img width="895" height="741" alt="Screenshot 2025-07-29 at 13 17 23" 
src="https://github.com/user-attachments/assets/b04df586-e7f1-482f-8295-5b488fb2238a";
 />
   
   
   #### After abbreviating the y axis labels
   <img width="897" height="740" alt="Screenshot 2025-07-29 at 13 17 14" 
src="https://github.com/user-attachments/assets/7c8906bf-7cd1-4c1f-87bc-a0a025e9624c";
 />
   
   


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