Sort Order Inconsistent

Elastic Stack Elasticsearch
1

Elasticsearch is running in a cluster with multiple shards. Two are primary, the rest are not. Using version 5.5.2.

I have several records with the same address but different document id. When I sort by address the order of the items within the same address varies. I assumed this is because the secondary ordering criteria is the document order.

When I run the search using the preference of _primary, the order is consistent. When I run the search using a preference of _replica, the sort is not consistent.

Is this expected behavior for primary and replica? Why does the order differ on replica?

2

Ok, found relevant info in The Definitive Guide. Says it's for v2.2, but that's fine. See Bouncing Results.

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