THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Group stable state: S1[T1, T2], S2[T3, T4], S3[T5] Scaling down the application, S2 will be leaving. #First Rebalance Member S2 joins the group and claim that it is leaving S1 performs task assignments: S1(assigned: [T1, T2], revoked: [], learning: [T3]) S2(assigned: [T3, T4], revoked: [], learning: []) S3(assigned: [T5], revoked: [], learning: [T4]) #Second Rebalance S3 finishes replay first and trigger another rebalance Member S1~S3 join with following status:(S1 is not ready yet) S1(assigned: [T1, T2], revoked: [], learning: [T3]) S2(assigned: [T3], revoked: [T4], learning: []) S3(assigned: [T5], revoked: [], learning: [T4]) S1 performs task assignments: S1(assigned: [T1, T2], revoked: [], learning: [T3]) S2(assigned: [T3], revoked: [T4], learning: []) S3(assigned: [T4, T5], revoked: [], learning: []) #Third Rebalance S1 finishes replay and trigger rebalance. Member S1~S3 join with following status: S1(assigned: [T1, T2], revoked: [], learning: [T3]) S2(assigned: [], revoked: [T3], learning: []) S3(assigned: [T4, T5], revoked: [], learning: []) S1 performs task assignments: S1(assigned: [T1, T2, T3], revoked: [], learning: []) S2(assigned: [], revoked: [T3], learning: []) S3(assigned: [T4, T5], revoked: [], learning: []) S2 will shutdown itself upon new assignment since there is no assigned task left. |
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