Hi Recently, I find that some users create timeseries do not following the real world semantic of device
E.g., a device has a sensor that collects some data in array format (int[3]) and some in long type. Many users will create timeseries like this: root.sg.device1.measurement1.int0 root.sg.device1.measurement1.int1 root.sg.device1.measurement1.int2 root.sg.device1.measurement2.long As a consequence, there will be two devices instead of one device. This will cause the real number of devices is much bigger than the real devices they thought. The drawback is: more devices leads to more memory consumption. A more efficient way is root.sg.device1.measurement1_int0 root.sg.device1.measurement1_int1 root.sg.device1.measurement1_int2 root.sg.device1.measurement2_long In this schema, there will be only one device and 4 measurements. The problem is we extract the device id automatically. Users usually do not have a clear concept about "device". Should we emphasize the concept of device by letting users create device manually? What do you think? Thanks, -- Jialin Qiao School of Software, Tsinghua University 乔嘉林 清华大学 软件学院
