Pierre Padovani commented on ATLAS-1863:

IMHO - A default value implies that the field is 'not null' *NOT* optional. 
This implies that the field is required to have a value when the entity is 
created, just that user input of the field is optional. Having a default value 
set for an optional field just doesn't make that much sense to me, however 
having it set for a field that is required makes a little more sense but still 
doesn't quite work either.

> Set default value for primitive types attributes in entity based on 
> attributeDef in Typedef
> -------------------------------------------------------------------------------------------
>                 Key: ATLAS-1863
>                 URL: https://issues.apache.org/jira/browse/ATLAS-1863
>             Project: Atlas
>          Issue Type: Improvement
>          Components: atlas-intg
>            Reporter: Nixon Rodrigues
>            Assignee: Ruchi Solani
>            Priority: Critical
>             Fix For: 0.9-incubating
>         Attachments: ATLAS-1863.2.patch, ATLAS-1863.3.patch, ATLAS-1863.patch
> While creating entity if attribute value are not set explicitly for primitive 
> type which are optional, then default value should be set from attributedef.
> eg of typedef attributeDef
> {code}
> "attributeDefs": [    {
>                                       "name": "sourceCode",
>                                       "typeName": "string",
>                                       "isOptional": true,
>                                       "cardinality": "SINGLE",
>                                       "valuesMinCount": 0,
>                                       "valuesMaxCount": 1,
>                                       "isUnique": false,
>                                       "isIndexable": true,
>                                       "defaultValue": "xyz"
>                               }
> {code}

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