[Updated] (MNG-6477) Check dependency is already downloaded and up-to-date locally, instead of downloading each time on mvn update

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[Updated] (MNG-6477) Check dependency is already downloaded and up-to-date locally, instead of downloading each time on mvn update

JIRA jira@apache.org

     [ https://issues.apache.org/jira/browse/MNG-6477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

chamarthi venkata hrudayanath updated MNG-6477:
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    Summary: Check dependency is already downloaded and up-to-date locally, instead of downloading each time on mvn update  (was: Check dependency is already downloaded and up-to-date locally instead of downloading each time)

> Check dependency is already downloaded and up-to-date locally, instead of downloading each time on mvn update
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: MNG-6477
>                 URL: https://issues.apache.org/jira/browse/MNG-6477
>             Project: Maven
>          Issue Type: Improvement
>          Components: Dependencies
>    Affects Versions: 3.5.0
>            Reporter: chamarthi venkata hrudayanath
>            Priority: Critical
>
> Check whether the dependency is already downloaded in local system and is up-to-date with latest one before downloading a new one from mvn repository each time when doing a maven update. Thereby it improves the performance and saves lot of data for all using maven project.
> Approaches that can be used:
> 1) when requested for a maven update, get the individual hash of dependencies already downloaded locally and sent them to mvn repo server. then mvn server should figure out the updated dependencies and new ones based on hashes. then it must download only those which are updated and new ones.



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