Are you using jdbc server? Paolo
Inviata dal mio Windows Phone ________________________________ Da: Louis Hust<mailto:louis.h...@gmail.com> Inviato: 22/07/2015 13:47 A: Robin East<mailto:robin.e...@xense.co.uk> Cc: user@spark.apache.org<mailto:user@spark.apache.org> Oggetto: Re: Is spark suitable for real time query I do a simple test using spark in standalone mode(not cluster), and found a simple action take a few seconds, the data size is small, just few rows. So each spark job will cost some time for init or prepare work no matter what the job is? I mean if the basic framework of spark job will cost seconds? 2015-07-22 19:17 GMT+08:00 Robin East <robin.e...@xense.co.uk<mailto:robin.e...@xense.co.uk>>: Real-time is, of course, relative but you’ve mentioned microsecond level. Spark is designed to process large amounts of data in a distributed fashion. No distributed system I know of could give any kind of guarantees at the microsecond level. Robin > On 22 Jul 2015, at 11:14, Louis Hust > <louis.h...@gmail.com<mailto:louis.h...@gmail.com>> wrote: > > Hi, all > > I am using spark jar in standalone mode, fetch data from different mysql > instance and do some action, but i found the time is at second level. > > So i want to know if spark job is suitable for real time query which at > microseconds?
