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https://issues.apache.org/jira/browse/HIVE-22825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17030744#comment-17030744
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Ashutosh Chauhan commented on HIVE-22825:
-----------------------------------------

1. There is no invalidation of cache yet. Is that not needed or this is 
experimental only?
2. I will suggest to change config hive.txn.acid.dir.cache.enabled to 
hive.txn.acid.dir.cache.duration with default value of -1 meaning disabled. And 
positive value used as expiry for cache duration. (making 30mins configurable)

> Reduce directory lookup cost for acid tables
> --------------------------------------------
>
>                 Key: HIVE-22825
>                 URL: https://issues.apache.org/jira/browse/HIVE-22825
>             Project: Hive
>          Issue Type: Improvement
>          Components: Hive
>            Reporter: Rajesh Balamohan
>            Assignee: Rajesh Balamohan
>            Priority: Minor
>         Attachments: HIVE-22825.1.patch, HIVE-22825.2.patch, 
> HIVE-22825.3.patch
>
>
> With objectstores, directory lookup costs are expensive. For acid tables, it 
> would be good to have a directory cache to reduce number of lookup calls.



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