{ "type": "record", "name": "AdnInstallDaily", "separatorChar": "\t", "fields": [ { "name": "device_id", "type": "string", "doc": "device id, gaid or idfa" }, { "name": "device_type", "type": "string", "doc": "device type" }, { "name": "platform", "type": "string", "doc": "platform" }, { "name": "campaign_id", "type": "string", "doc": "campaign id" }, { "name": "package_name", "type": "string", "doc": "package name" } ] }