User Guide
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How does it work?

The WriteAheadProvenanceRepository was introduced in NiFi 1.2.0 and provided a refactored and much faster provenance repository implementation than the previous PersistentProvenanceRepository. The encrypted version wraps that implementation with a record writer and reader which encrypt and decrypt the serialized bytes respectively.

The fully qualified class org.apache.nifi.provenance.EncryptedWriteAheadProvenanceRepository is specified as the provenance repository implementation in as the value of nifi.provenance.repository.implementation. In addition, new properties must be populated to allow successful initialization.