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• This release deprecated support for RocksDBFlowFileRepository. The RocksDB repository is packaged in a separate NAR named nifi-rocksdb-nar, available for download from Maven Central
• This release removed Hive 1.2 components from the standard release binary. The nifi-hive-nar and nifi-hive-services-api-nar modules can be downloaded from Maven Central

Migrating from 1.15.3 and earlier to 1.17.0 or 1.18.0

• Versions 1.15.3 and earlier stored the Flow Configuration in flow.xml.gz, and version 1.16.0 introduced a new serialization format stored in flow.json.gz. As a result of changes in version 1.17.0 to support Sensitive Dynamic Properties, components can be marked as invalid when the Flow Configuration contains a Parameter Context with a Sensitive Parameter Value that is referenced in a Sensitive Property. This issue can be resolved by entering the Sensitive Parameter Value in the referenced component Sensitive Property, which will save the Flow Configuration using the new flow.json.gz format. As an alternative, first upgrading to version 1.16.3 and then upgrading to 1.17.0 also avoids invalid component status issues.

Migrating from 1.15.0 to 1.16.0

• This release adds HTTP request logging and updates the default logback.xml configuration. Deployments with customized Logback configurations should add a new request appender and request logger configuration to avoid writing HTTP requests to nifi-app.log
• This release removed support for Elasticsearch 2 components. Version 1.15.3 of nifi-elasticsearch-nar can be downloaded from Maven Central
• This release removed support for Elasticsearch 5 components. Version 1.15.3 of nifi-elasticsearch-5-nar can be downloaded from Maven Central
• This release removed support for Kite components. Version 1.15.3 of nifi-kite-nar can be downloaded from Maven Central
• This release removed support for Lumberjack components. Version 1.15.3 of nifi-lumberjack-nar can be downloaded from Maven Central
• This release removed support for Kafka components supporting Kafka versions prior to 1.0. Version 1.15.3 of nifi-kafa-0-nar modules can be downloaded from Maven Central
• This release removed support for InfluxDB from the standard NiFi binary download. The nifi-influxdb-nar can be downloaded from Maven Central
• This release removed the nifi-processor-utils JAR and refactored classes into several new modules under nifi-extension-utils. When rebuilding custom components to depend on 1.16.0 libraries, it will be necessary to remove dependencies on nifi-processor-utils. Custom NAR bundles, already compiled using versions prior to 1.16.0, can continue to be used in runtime deployments
• This release removed support for MySQL 5.6 /5.7 and Postgres 9.x for NiFi Registry's database, supported databases are now H2, Postgres 10.x - 14.x and MySQL 8.x.
• NOTE: A bug was discovered after the release (NIFI-9836) that causes NiFi Registry to only work with H2. The issue is addressed in main and will be resolved in 1.16.1.

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