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From Oleg Zhurakousky <>
Subject Re: ConvertCSVToJSON
Date Fri, 03 Mar 2017 17:21:44 GMT

As Joe mentioned, we already have a set of direct Transformers for JSON, AVRO and CSV. You
can see more details here What’s great
about them is that they rely on external schema provider (i.e., Schema Registry) and we currently
provide a simple Key/Value based registry as Controller Service and planning to provide more
implementations of such service to work with variety of external stores.
That said, you may be mentioning certain features which the current version of these processors
are lacking and adding those features (if they provide a substantial value) is definitely
something that we are looking for from the field, so please give it a look and follow up either
here or on JIRA by requesting certain features and/or submitting PR for it.

Let us know what you think

On Mar 3, 2017, at 12:02 PM, Joe Witt <<>>


There are a new set of conversion processors available on master if you can build that.  If
will allow you to do direct.

They were in a PR from Oleg.  Am on phone or else I'd find a good pointer.


On Mar 3, 2017 11:44 AM, "Frank Maritato" <<>>
Hi All,

Currently, if you have a CSV file and you want to convert it to JSON in Nifi, you need to
do ConvertCSVToAvro->InferAvroSchema (or specify a static schema)->ConvertAvroToJSON.

I have created a processor that goes directly from CSV to JSON. It will use the headers as
field names if provided or you can specify the headers. It will also try to determine if the
values are numeric or string. Is this something the community would find useful? If so, I
can create a ticket and submit a PR.

Frank Maritato
Data Architect

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