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?^_^ > > >
