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https://issues.apache.org/jira/browse/MRESOLVER-231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17459456#comment-17459456
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Tamás Cservenák commented on MRESOLVER-231:
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[~slachiewicz] wdym? Nexus2 support and "smart checksum" feature was present in
Resolver for eons, this PR merely refactors it (moves it out, makes it
pluggable). Unsure what nexus documentation you refer to...
> Extend "smart checksum" feature of resolver
> -------------------------------------------
>
> Key: MRESOLVER-231
> URL: https://issues.apache.org/jira/browse/MRESOLVER-231
> Project: Maven Resolver
> Issue Type: Task
> Components: Resolver
> Reporter: Tamás Cservenák
> Assignee: Tamás Cservenák
> Priority: Major
> Fix For: 1.7.3
>
>
> So far only Sonatype Nexus2 was supported (by http-transport).
> This feature cuts back one extra HTTP roundtrip (to get sha1/md5), if they
> are already sent by upstream repository. And not only Nexus2 sends them.
> Effectively, if X artifacts are requested, this potentially halves HTTP
> request count (as X and X.hash is being request currently).
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