Classifier

Available in VPC

Classifier provides a classification function to determine the schema when scanning unstructured data. The scanner automatically infers the schema of files such as CSV, JSON, and XML, even without setting a classifier. However, by setting a classifier, you can infer data from unformatted files into a specified format or generate metadata only with specific data. The Classifier menu allows you to create and manage classifiers.

Create classifier

The following describes how to create a classifier.

1. From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Catalog menu, in that order.
2. Click the Configuration > Classifier menus, in that order.
3. Click the [Create classifier] button.
4. When the Create classifier popup window appears, enter the required information.
   • Name: a classifier’s name
   • Type: data file format
   • Classification Setting: enter the classification setting according to the data file format.
     • CSV: select a delimiter to separate column entries in your data
     • JSON: designate path to generate metadata only with the specified data
       • <example> $.store.: designate store field
       • <example> $.store.book[*].author: designate the author field under the book field under the store field
     • XML: designate row tag to generate metadata only with specified node data
5. Click the [Create] button.

Search classifier and check information

The following describes how to view the created classifier and check the information.

1. From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Catalog menu, in that order.
2. Click the Configuration > Classifier menus, in that order.
3. After entering the classifier name in the search bar, click to search for the classifier and check the information.
   • Type: data file format
   • Name: a classifier’s name
   • Details: classification settings entered when creating the classifier
   • Created date: date when creating a classifier
   • Updated date: most recent date when editing a classifier’s information

Edit classifier

The following describes how to edit the created classifier.

1. From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Catalog menu, in that order.
2. Click the Configuration > Classifier menus, in that order.
3. Click the classifier you want to edit and click the [Edit] button.
4. When the Edit classifier popup window appears, edit the required information.
   • For more information on each item, see Create classifier.
5. Click the [Edit] button.

Delete classifier

The following shows how to delete the created classifier.

1. From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Catalog menu, in that order.
2. Click the Configuration > Classifier menus, in that order.
3. Click the classifier you want to delete and click the [Delete] button.
4. When the notification popup window appears, check the cautions and click [Delete].