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- FileSetProperties.setUseExisting(true) (or DATA_USE_EXISTING / "data.use.existing") to reuse an existing location and Hive table. The dataset will assume that it does not own the existing data in that location and Hive table, and therefore, when you delete or truncate the dataset, the data will not be deleted.
- FileSetProperties.setPossessExisting(true) (or DATA_POSSESS_EXISTING / "data.possess.existing") to assume ownership an existing location and Hive table. The dataset will assume that it owns the existing data in that location and Hive table, and therefore, when you delete or truncate the dataset, all data will be deleted, including the previously existing data and Hive partitions.
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See http://www.cloudera.com/documentation/enterprise/5-2-x/topics/cdh_sg_hive_metastore_security.html details.
CDAP Authorization (if needed):
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Existing REST API. Please see: http://docs.cask.co/cdap/current/en/reference-manual/http-restful-api/stream.html#getting-and-setting-stream-properties
Datasets
Creating dataset with owner:
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curl -v -X PUT http://somehost.net:11015/v3/namespaces/{namespace-id}/data/datasets/{dataset-id} -d '{ "typeName": "table", "properties": {}, "principal": "someuser/somehost.net@SOMEKDC.NET" }' -H "Authorization: Bearer your_access_token" |
Querying dataset properties for owner information:
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