Record Matching

Once the input data is distributed into individual block buckets, each matcher retrieves a bucket and proceeds to compare each record to every other record in a block and assign a weight that indicates the probability that the records match. The matching logic used here is identical to the matching logic used by the master index application. Any matches that are found during this process are written to a file. Once a matcher completes matching on a block bucket, the cluster synchronizer copies the match file to the master matcher's working directory.