By default, the Provenance Repository is implemented in a Persistent Provenance configuration. In Apache NiFi 1.2.0, the Write Ahead configuration was introduced to provide the same capabilities as Persistent Provenance, but with far better performance. Migrating to the Write Ahead configuration is easy to accomplish. Simply change the setting for the nifi.provenance.repository.implementation system property in the nifi.properties file from the default value of org.apache.nifi.provenance.PersistentProvenanceRepository to org.apache.nifi.provenance.WriteAheadProvenanceRepository and restart NiFi.

However, to increase the chances of a successful migration consider the following factors and recommended actions.