Forward Index Update
From Gcube Wiki
The ForwardIndexUpdater Service is responsible for feeding content into the forward index. The content of the forward index consists of key value pairs. A ForwardIndexUpdater Service resource updates a single Index. One index may be updated by several ForwardIndexUpdater Service instances simultaneously. When feeding the index, a ForwardIndexUpdater Service is created, with the EPR of the FullTextIndexManagement resource connected to the Index to update. The ForwardIndexUpdater instance is connected to a ResultSet that contains the content to be fed to the Index.
Read more on Index Management Framework architecture.