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Workloads that perform multi-deletes and then assert on the number of documents deleted will not work with balancer or migration suites. This is because multi-deletes aren't versioned, and thus do not filter for orphans. During and after migrations, there could exist an undefined number of orphans, due to either:
- Documents currently streaming to the current node in process of a migration that have not yet been "assigned" to the node via shard versioning, or
- Documents not yet deleted ("left over") on a node that has officially migrated documents to another node.
The consistent solution is to blacklist these suites from the balancer and migration suites.
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