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Bug 262257 - Maven incremental indexes
Summary: Maven incremental indexes
Status: NEW
Alias: None
Product: projects
Classification: Unclassified
Component: Maven (show other bugs)
Version: 8.2
Hardware: All All
: P3 normal with 1 vote (vote)
Assignee: Tomas Stupka
URL:
Keywords: PERFORMANCE
Depends on:
Blocks:
 
Reported: 2016-05-27 14:45 UTC by _ gtzabari
Modified: 2016-08-23 07:35 UTC (History)
1 user (show)

See Also:
Issue Type: ENHANCEMENT
Exception Reporter:

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Description _ gtzabari 2016-05-27 14:45:53 UTC 
According to http://blog.sonatype.com/2009/05/nexus-indexer-20-incremental-downloading/ we can see major performance gains by downloading incremental index files than downloading the full nexus-maven-repository-index.gz file every time.

nexus-maven-repository-index.gz is huge, and getting bigger every day. Please add support for downloading incremental indexes so we only have to pay this price once. Aside from the slow download time, unpacking takes even longer.

I work at Expedia, and their internal Nexus indexes take even longer to download/unpack than Maven Central (if you can imagine such a thing). Downloading/unpacking their index can take as much as 15 minutes some days. Adding support for incremental indexes would go a long way towards improving this situation.
Comment 1 emi 2016-08-23 07:35:52 UTC 
I would personally vote for an all-online Maven search instead of using the index (see #254313) but indeed, incremental updates would do wonders for Maven Central and other compatible repositories.