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  1. Hive
  2. HIVE-21637 Synchronized metastore cache
  3. HIVE-22015

[CachedStore] Add table constraints in CachedStore

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      Currently table constraints are not cached. Hive will pull all constraints from tables involved in query, which results multiple db reads (including get_primary_keys, get_foreign_keys, get_unique_constraints, etc). The effort to cache this is small as it's just another table component.

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              adeshrao Adesh Kumar Rao
              daijy Daniel Dai
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