[nikhilred2619]

Fixes #8995

Summary

SimpleLogRecordProcessor.forceFlush() and SimpleSpanProcessor.forceFlush() pass the live pendingExports set to CompletableResultCode.ofAll().

Because completed exports are removed concurrently, the set can change between the size calculation and iteration. This can leave the aggregated forceFlush() result incomplete even after every export has finished.

This change:

• Takes a snapshot of pendingExports before passing it to CompletableResultCode.ofAll() in both processors.
• Ensures the aggregate result counts and iterates over a consistent collection.
• Preserves the existing export completion and pending-export tracking behavior.

Regression Tests

Added coverage for both log and span processors, including:

• forceFlush() with no pending exports.
• Failed exports and failure propagation.
• Repeated forceFlush() calls after exports complete.
• Exports completing concurrently with forceFlush().
• Concurrent export completion during shutdown().

The concurrency tests exercise bounded races. They do not force the exact problematic interleaving, but verify that the aggregate result is complete once all relevant exports have completed.

Validation

Tested locally on macOS using Eclipse Temurin JDK 25.0.5.

• ./gradlew :sdk:logs:test :sdk:trace:test — Passed
• ./gradlew :sdk:logs:check :sdk:trace:check — Passed
• git diff --check — Passed

All checks completed successfully.

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Waiting on reviewers · refreshed 2026-11-05 14:20 UTC

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.37%. Comparing base (1acb73a) to head (446e874).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #9005   +/-   ##
=========================================
  Coverage     90.37%   90.37%           
- Complexity    11012    11013    +1     
=========================================
  Files          1020     1020           
  Lines         30119    30119           
  Branches       3932     3932           
=========================================
+ Hits          27219    27220    +1     
  Misses         1941     1941           
+ Partials        959      958    -1     

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