This page explains what role a Committer plays in the Ikasan EIP project.
How to become a Committer
After a Contributor has submitted several good/significant patches then a Committer can vote for that Contributor to become a Committer and the other Committers have 48 hours to vote +1 or -1 for that.
Committers have full SVN commit access and can commit code changes to the project without going through a patch approval process.
Committers have the right to veto patches during the a patch review process, see Submitting a Patch