SPU - 1
topic-a/0
a
c
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l
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topic-b/0
topic-a/1
F ile - S to r e
topic-a/2
SPU - 2
a
c
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l
p
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R
F ile - S to r e
topic-a/2
SPU - 3
a
c
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l
p
e
R
topic-a/1
F ile - S to r e
topic-a/0
topic-a/0
topic-a/1
topic-a/2
topic-b/1
topic-b/0
topic-b/1
L
L
L
SC
LRS
2
3
1
topic-a/0
D a ta S t r e am
1
3
2
topic-a/1
1
2
3
topic-a/2
3
1
topic-b/0
2
3
topic-b/1
LRS
D a ta S t r e am