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From "mahesh kumar behera (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-18661) CachedStore: Use metastore notification log events to update cache
Date Mon, 05 Nov 2018 03:01:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-18661?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

mahesh kumar behera updated HIVE-18661:
---------------------------------------
    Status: Patch Available  (was: Open)

> 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: mahesh kumar behera
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-18661.02.patch, HIVE-18661.03.patch
>
>
> 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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