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December 11, 2017 20:20
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Kafka Message Binary Format (Proposed)
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XXXX XXXX = 8 bits | |
1. XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX - baseOffset | |
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX | |
2. XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX - batchLength | |
3. XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX - partitionLeaderEpoch | |
4. XXXX XXXX - magic (current magic value is 2) | |
5. XXXX XXXX XXXX XXXX - attributes | |
Compression | |
000 - no comporession | |
001 - gzip | |
010 - snappy | |
011 - lz4 | |
Timestamp | |
0 - create time | |
1 - log append time | |
X - isTransactional | |
X - isControlBatch | |
X - isTimestampExtended ← | |
X XXXX XXXX - unused | |
6. XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX - lastOffsetDelta | |
7. XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX - firstTimestamp | |
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX | |
8. XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX - maxTimestamp | |
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX | |
9. XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX - producerId | |
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX | |
10. XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX - producerEpoch | |
11. ... - baseSequence | |
12. ... - records |
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