Re: [DISCUSS] Should we use spark-tsfile or spark-iotdb

2020-10-18 Thread Julian Feinauer 
Hi,

that is very interesting results and indeed I would opt for using iotdb by 
default.
My vision is to enable advanced query optimization and indexing as it is known 
by RDBMS.
Then this could be faster by orders of magnitude if the database has a suitable 
index.

Just my 2 ct : )

Julian

Am 16.10.20, 04:46 schrieb "南京大学软件学院薛恺丰" <827011...@qq.com>:

Hi everyone,
I have done some test about spark-tsfile and spark-iotdb, the result is 
at: https://cwiki.apache.org/confluence/display/IOTDB/Spark-tsfile+and+Spark-iotdb+comparasion


What conclusion we can get from these result?


I think the reason is iotdb query process is paralleled, but tsfile are 
not. And we may not optimize tsfile query process frequently in future. Should 
we just use spark-iotdb in future?


Best Regards,
Kaifeng Xue

[DISCUSS] Should we use spark-tsfile or spark-iotdb

2020-10-15 Thread ?????????????????????? 
Hi everyone,
I have done some test about spark-tsfile and spark-iotdb, the result is 
at: https://cwiki.apache.org/confluence/display/IOTDB/Spark-tsfile+and+Spark-iotdb+comparasion


What conclusion we can get from these result?


I think the reason is iotdb query process is paralleled, but tsfile are not. 
And we may not optimize tsfile query process frequently in future. Should we 
just use spark-iotdb in future?


Best Regards,
Kaifeng Xue