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- Core Framework
- OpenId Connect support for authenticating users
- DistributedMapCacheClients and StateProviders can now use Redis
- Can now use Apache Ranger to authorize groups and see Ranger policies in NiFi
- Added support for LDAP-based user and group authorization
- Added support for combining multiple user and group authorization providers in a chain*
- Added support for X-Forwarded-* headersKnox (proxying and SSO)
- NiFi now honors the "nifi.content.claim.max.appendable.size" property
- New or Improved Processors, Controller Services, and Reporting Tasks
- Added Processors for interacting with Kafka 0.11.x supporting transactions and message headers
- New processors for working with RethinkDB
- New processors for sending data to Apache Kudu
- gRPC client and server processors
- New record-based processors: MergeRecord, ValidateRecord, ListenTCPRecord, PutHBaseRecord
- Integration with Schema Registry for Kafka
- UI/UX
- Added support for Variable Registry at the Process Group level
- Users can now double-click on a processor to display its configuration
- When performing a Queue Listing, the UI will now indicate if the FlowFile has no content
- Provenance repository storage usage is now displayed in the Systems Diagnostics dialog
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