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• PutKudu processor - while NIFI-6551 fixes flows writing to Kudu timestamp (UNIXTIME_MICROS) columns via timestamp or date fields. This change could break PutKudu processors that are writing to Kudu timestamp (UNIXTIME_MICROS) columns via numeric fields. Before this change, flows would often multiply millisecond values by 1000 to write microsecond values to Kudu. On upgrade this multiplication should be removed and milliseconds should be sent.
• HandleHttpRequest was updated to no longer write the 'http.param.*' attributes. These attributes were undocumented and therefore not part of its 'contract'. They were removed because in the case of query parameters, they were duplicative and in the case of multipart/form data, they were both duplicative of FlowFile content and also dangerous as could be potentially extremely large. Multipart/form data was never intended to be included as attributes but were inadvertently included. This is no longer the case. If multipart/form data is needed as an attribute, the appropriate attributes can be captured via the ExtractText processor.
• NARs for Kafka 0.9 and Kafka 0.10 have been removed from the convenience binary. You can still get them from the various artifact repositories and use them in your flows but we cannot bundle them due to space limitations by default.
• The SSLContextService interface was updated as part of NIFI-7407.  Custom NARs that depend on nifi-standard-services-api-nar may need to be rebuilt against version 1.12.0 to ensure compatibility.  Users of those custom nars could also just pull in the appropriate service API and service implementation nars in their environment.
• The underlying implementation for CSVRecordLookupService's "CSV Format" property was changed in NIFI-7770, rendering existing CSVRecordLookupService instances invalid. The dynamic property should be removed and its value set in the "new" CSV Format property. NOTE: This change was applied in 1.12.1, so it does not exist in 1.12.0.

Migrating from 1.x.x to 1.11.x

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