Vaibhav Gumashta updated HIVE-18661:
    Issue Type: Sub-task  (was: Bug)
        Parent: HIVE-16520

> CachedStore: Use metastore notification log events to update cache
> ------------------------------------------------------------------
>                 Key: HIVE-18661
>                 URL: https://issues.apache.org/jira/browse/HIVE-18661
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Metastore
>            Reporter: Vaibhav Gumashta
>            Assignee: Vaibhav Gumashta
>            Priority: Major
> Currently, a background thread updates the entire cache which is pretty 
> inefficient. We capture the updates to metadata in NOTIFICATION_LOG table 
> which is getting used in the Replication work. We should have the background 
> thread apply these notifications to incrementally update the cache.

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