Re: IoTDB supports distributed version

2019-03-31 Thread Felix Cheung
I, on the other hand, would be very interested in the strong consistency option. (Very cool discussion!) From: Julian Feinauer Sent: Thursday, March 28, 2019 1:10 AM To: dev@iotdb.apache.org Subject: Re: IoTDB supports distributed version Hi, this is a very in

Re: IoTDB supports distributed version

2019-03-31 Thread Julian Feinauer
Hi Felix, could you elaborate a bit on your use cases? I am a bit unsure about the consistency, so it would be interesting to hear where you see the important points. Thanks! Julian Am 31.03.19, 20:25 schrieb "Felix Cheung" : I, on the other hand, would be very interested in the strong co

Re: IoTDB supports distributed version

2019-03-31 Thread Felix Cheung
The use case I’m thinking about for time series data is a bit sensitive for data loss. Suppose for transaction records. I think I’d generally agree on A in CAP too. But is it going to be eventual consistency? Or it could split brain and lose data? From: Julian

Re: IoTDB supports distributed version

2019-03-31 Thread Julian Feinauer
Hi Felix, yes, I see, this, indeed would feature the C. As we are usually very "edge" focused we do not care that much about the P as we have no or very few replications, so no big danger of splits. But it is questionable in this situation whether one wants ot use the Server or sticks to the tsf

Re: IoTDB supports distributed version

2019-03-31 Thread Xiangdong Huang
Hi, IoTDB/TsFile can run on a device (edge side), and in a data center. Firstly, when we say the distributed version, we refer to the latter. If we run IoTDB/TsFile on the edge, our current design is not for letting these IoTDB instances forming a cluster. What we need to support is letting these