How can I update Maven Index manually?

Question

I have this problem:

When I start Eclipse (Indigo Service Release 1 with Maven Integration for Eclipse) it's trying to download a file from Maven Repositories :

repo1.maven.org/maven2/.index/nexus-maven-repository-index.gz

It reaches about 10-20% (this takes loooong) and then apparently it gives up:

02.05.12 08:47:36 MESZ: Updating index central|http://repo1.maven.org/maven2
02.05.12 09:09:25 MESZ: Unable to update index for central|http://repo1.maven.org/maven2

Now I tried to download this gz-file manually because I thought, the download hits any timeout within Eclipse. Now I have another two problems:

1. The direct download of the 48,7 MB-gz-file canceled after 9,6 MB. I have no clue why.
2. If I'd be able to download the gz-file, I don't know how to "put it into" Eclipse/Maven or tell Maven to use the file on my PC and not the repository repo1.maven.org.

Any helpful ideas or answers?

Answer 1

1. Delete the cache from .m2/repository/.cache/m2e.
2. Open your eclipse
3. Menu Windows > Preferences > Maven > User Settings > Update Settings

Eclipse will download it again, should work now.

Answer 2

Try to change the timeout settings like described here. I do not know which setting is responsible for the repository index update, you have to try a bit...

-Dsun.net.client.defaultReadTimeout=60000
-Dorg.eclipse.ecf.provider.filetransfer.retrieve.readTimeout=60000

You should consider to disable the index update on startup (disable: Preferences -> Maven -> Download repository index updates on startup) and only update manually in the Maven Repositories View using the context menu on the central repository.