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chrislu
4259b15956
Created detailed debug tests that reveal: 1. ✅ Our Metadata v1 response structure is byte-perfect - Manual parsing works flawlessly - All fields in correct order and format - 83-87 byte responses with proper correlation IDs 2. ❌ kafka-go ReadPartitions consistently fails - Error: 'multiple Read calls return no data or error' - Error type: *errors.errorString (generic Go error) - Fails across different connection methods 3. ✅ Consumer group workflow works perfectly - FindCoordinator: ✅ Working - JoinGroup: ✅ Working (with member ID reuse) - Group state transitions: ✅ Working - But hangs waiting for SyncGroup after ReadPartitions fails CONCLUSION: Issue is in kafka-go's internal Metadata v1 parsing logic, not our response format. Need to investigate kafka-go source or try alternative approaches (Metadata v6, different kafka-go version). Next: Focus on SyncGroup implementation or Metadata v6 as workaround.