score:9

Accepted answer

as stacker points out, each of these seem to be a lucene segment file, with compound file format. if you want to see what is inside, you can open them with luke.

score:3

every repository that m2eclipse uses is indexed by the nexus indexer. if m2eclipse is using a remote repository, it will download a nexus index from the remote repository. if m2eclipse is managing a local repository (local or workspace) it will use the open source nexus indexer to create and maintain a local index. this index is what allows you to quickly search for and locate dependencies by artifactid, groupid, version, or classname.

http://books.sonatype.com/m2eclipse-book/reference/repository-sect-repo-view.html#d5e1169

score:32

you might also consider unchecking the checkbox (under window menu, preferences, maven):

download repository index updates at startup

score:51

indeed, it's nexus indexes. you can disable partially or totally nexus indexes retrieval by right clicking on repositories in the maven repositories view and checking/uncheking disable index details/enable minimum index/full index enabled (options with m2eclipse 0.12).

hereunder a screenshot: enter image description here


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