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Questions on kafka leader selection
Hi Team,

Please help to understand following questing as we are planning to use
kafka 0.8 in our production,
1. We found the 'leader: -1' state, when the leader selection will happen
for such partitions? Does the partition data will be unavailable till that

topic: test1    partition: 0    leader: -1      replicas: 4,2,3 isr:
topic: test1    partition: 1    leader: 0       replicas: 0,3,4 isr: 0,4
topic: test1    partition: 2    leader: 1       replicas: 1,4,0 isr: 1,0,4

2. Do we need to restart the brokers to update the isr entries to remove
the unavailable brokers?

Yogesh Sangvikar