The JSON Encoder

“JSON” is short for “JavaScript Object Notation”. It is a lightweight data interchange format that uses human-readable text to transmit data comprised of attribute-value pairs. It is language-independent and has proven to be quite useful in many Big Data use cases. In the case of this encoder, the “attributes” are the column/field names, and the “values” are the actual data values associated with those names.

Here is an example of JSON-encoded data:

{"ID":"2871","NAME":"Dane Nash","GENDER":"Male","CITY":"Le Grand-Quevilly", 
"PHONE":"(874)373-6196","OLD_ID":"1","ZIP":"81558-771","CUST_DATE":"2014/04/13"}

Column/field names are ID, NAME, GENDER, CITY, and so on.

To tell BDGlue to make use of the JSON Encoder, simply specify the encoder in the bdglue.properties file as follows:

bdglue.encoder.class = bdglue2.encoder.JsonEncoder

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