fallintoplace opened a new pull request, #1361:
URL: https://github.com/apache/iceberg-go/pull/1361

   ## Summary
   
   Bound manifest merge bin processing with an errgroup concurrency limit 
instead of starting one goroutine per packed bin.
   
   The limit defaults to runtime.GOMAXPROCS(0) and can be tuned with the table 
property commit.manifest-merge.max-concurrency. Non-positive or invalid values 
fall back to the default.
   
   ## Why
   
   Large commits can produce many manifest merge bins. Launching all bin merges 
at once can spike goroutines, file handles, CPU, and memory during commit even 
though the work is naturally parallel only up to a reasonable worker limit.
   
   ## Testing
   
   - go test ./table -run 'TestManifestMerge(MaxConcurrency|GroupLimits)' 
-count=1
   - go test ./table -count=1
   - go test ./... -skip 
'^TestCreateAzureBucketManagedIdentityCredentialCalled$'
   - go run github.com/golangci/golangci-lint/v2/cmd/[email protected] run 
--timeout=10m ./table/...
   - git diff --check


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