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Broker A (Leader)Broker B (Follower)Remote StorageRL Metadata Storage

3: msg 3 LE-1

4: msg 4 LE-1

5: msg 5 LE-2

6: msg 6 LE-2

7: msg 7 LE-3 (HW)


leader_epochs:

LE-0, 0

LE-1, 3

LE-2, 5

LE-3, 7

Fetch from PLO EPUO to HW

6: msg 6 LE-2

7: msg 7 LE-3 (HW)


leader_epochs:

LE-0,0

LE-1,3

LE-2,5

LE-3,7


seg-0-2, uuid-1

  log:

  0: msg 0 LE-0

  1: msg 1 LE-0

  2: msg 2 LE-0

  epochs:

  LE-0, 0


seg 3-5, uuid-2

  log:

  3: msg 3 LE-1

  4: msg 4 LE-1

  5: msg 5 LE-2

  epochs:

  LE-0, 0

  LE-1, 3

  LE-2, 5  

seg-0-2, uuid-1

segment epochs:

LE-0, 0


seg-3-5, uuid-2

segment epochs:

LE-1, 3

LE-2, 5

...