Oops, I just resend it, you know the chinese network^_^ 2017-04-28 14:20 GMT+08:00 Mostafa Mokhtar <[email protected]>:
> Btw the profile wasn't attached. > Please resend. > > On Thu, Apr 27, 2017 at 11:11 PM, 吴朱华 <[email protected]> wrote: > >> Profile is in the attachment, thanks >> >> >> 2017-04-28 13:10 GMT+08:00 Dimitris Tsirogiannis < >> [email protected]>: >> >>> Maybe you also want to post some information about the schema (how wide >>> your table is, does it use nested types, etc) as well as the profile of >>> the >>> slow query. >>> >>> Dimitris >>> >>> On Thu, Apr 27, 2017 at 9:30 PM, 吴朱华 <[email protected]> wrote: >>> >>> > Hi guys: >>> > we can facing a big issue when select * from a big table. >>> > The performance is 17minutes for retrieving 400MB data. Even slow under >>> > JDBC situation. >>> > Is there anyway to improve it?^_^ >>> > >>> >> >> >
