{ "schemaName": "clickstream", "dimensionFieldSpecs": [ { "name": "user_id", "dataType": "INT" }, { "name": "web_page", "dataType": "STRING" }, { "name": "order", "dataType": "INT" }, { "name": "location", "dataType": "STRING" }, { "name": "visit", "dataType": "INT" } ], "dateTimeFieldSpecs": [ { "name": "ts", "dataType": "TIMESTAMP", "format": "1:MILLISECONDS:EPOCH", "granularity": "1:MILLISECONDS" } ] }