Classifier - AWS Glue


Classifiers are triggered during a crawl task. A classifier checks whether a given file is in a format it can handle. If it is, the classifier creates a schema in the form of a StructType object that matches that data format.

You can use the standard classifiers that AWS Glue provides, or you can write your own classifiers to best categorize your data sources and specify the appropriate schemas to use for them. A classifier can be a grok classifier, an XML classifier, a JSON classifier, or a custom CSV classifier, as specified in one of the fields in the Classifier object.



A classifier for comma-separated values (CSV).

Type: CsvClassifier object

Required: No


A classifier that uses grok.

Type: GrokClassifier object

Required: No


A classifier for JSON content.

Type: JsonClassifier object

Required: No


A classifier for XML content.

Type: XMLClassifier object

Required: No

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: