What does "PerformPostRestoreFixUp" do?

Question

If a database is restored for two new peers, after executing "PerformPostRestoreFixUp", why the two peers can sync well without any conflict.

So what does "PerformPostRestoreFixUp" do actually?

Thanks a lot,

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Answer 1

each replica in a sync community has a unique identifier (a replica id). if you restore a backup of a database, it will result to two replicas having the same id.

PerformPostRestoreFixup fixes the sync metadata to avoid this.

Answer 2

Ok, If the peer A and peer B restore the same database (from peer C), so there are two new replica Id will be created for peer A and peer B, right?

So peer C knows nothing about peer A and peer B, they are new replica, and peer A and peer B don't know each other

So why the old data in the database (from peer C) won't be synced among peers again?

Thanks a lot,

Abby

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Answer 3

it assigns a new Id without wiping out the sync knowledge. so it still knows the data that was previously sync.

simply put, Peer A and B gets a new id and their sync knowledge thinks it has previously synched with C.

Answer 4

If the peer A was in the sync community before, then peer A restores database from peer C, after executing "PerformPostRestoreFixUp", it will get a new replica Id or the old one assigned to peer A

Thanks a lot,

Abby

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Answer 5

everytime you do a PerformPostRestoreFixup, it gets a new one.