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1. Login to http://oss.sonatype.org/
2. Click "Staging Repositories" in the left column, then select the checkbox next to the staged repository on the right. The contents of it will open up at the bottom of the page.
3. With the staged repository still selected, click the "Close" button at the top.

4. Download and test Ensure that the artifacts in staging are exactly as they should be once deployed to centralMaven Central.  Here's a few things to watch out for...

   1. Download one (or more) of the POMs, and make sure the <version> tag is correct (e.g. 6.0 and not a SNAPSHOT version or similar)

   2. Compare it against a past release in Maven Central (http://repo2.maven.org/maven2/org/dspace/), making sure it has the same JARs or WARs, etc

   3. You can also verify the checksums of one or more of the JARs/WARs in Sonatype versus those that were installed into your .m2 directory. They should be the same.

      Info
      title If You Need to Revert Back before Releasing
      If anything is incorrect, select the staged repository and select "Drop". After the problem is resolved, you can re-deploy the artifacts to staging and verify them again. To re-deploy an already-tagged release: mvn release:perform -Dmirage2.on=true -Dtag=dspace-x.y -DconnectionUrl=scm:git:git@github.com:DSpace/DSpace.git -Darguments="-Dgpg.keyname=YourKeyId -Dgpg.passphrase=YourKeyPassword"

5. If everything looks good, select the repository and select "Release". The artifacts should be synced to Maven central (http://repo2.maven.org/maven2/org/dspace/) within 2 hours.

   Warning
   title Once Released, There is No "Undo" Option
   Once you select "Release", there is no way to "undo" the release. If any major issues are found, you'll have to increment the version number and perform a new bug-fix release.

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