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From "David Mollitor (Jira)" <j...@apache.org>
Subject [jira] [Commented] (TEZ-4275) Use Google Guava Intern Facility
Date Fri, 29 Jan 2021 03:48:00 GMT

    [ https://issues.apache.org/jira/browse/TEZ-4275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17274136#comment-17274136
] 

David Mollitor commented on TEZ-4275:
-------------------------------------

I'll take a look at shading Guava. It's a great library to have.

> Use Google Guava Intern Facility
> --------------------------------
>
>                 Key: TEZ-4275
>                 URL: https://issues.apache.org/jira/browse/TEZ-4275
>             Project: Apache Tez
>          Issue Type: Improvement
>            Reporter: David Mollitor
>            Assignee: David Mollitor
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Google Guava has a pretty cool Interner facility.
>  
>  * More memory efficient than current offering.  Map contains a weak key and a static
dummy value (current implementation uses a weak value)
>  * Current implementation has a single lock around the entire data structure.  Google
segments their data structure into (default: 4) segments for better concurrency
>  * All the other thoughtful stuff Google has added into this feature



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