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Keywords: Collection Alias, Collection Hot Reload

Released: TODO

MEP: https://wiki.lfaidata.foundation/display/MIL/MEP+10+--+Support+Collection+Alias

Summary

1. As the name indicates, CollectionAlias is an alias to an existing collection.
2. The collection alias can be updated to a new collection.
3. Within RootCoordinator, Proxy, and all the key components, CollectionName and CollectionAlias are equal.
   e.g. MetaTable.GetCollectionByName(collectionName string, ts typeutil.Timestamp) can receive CollectionAlias and return corresponding CollectionInfo.
4. CollectionAlias ∧ CollectionName = ∅ . CollectionAlias cannot collide with existing CollectionNames.

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