Yes that's exactly the reason.
On Sat, May 23, 2015 at 12:37 AM, Yijie Shen <henry.yijies...@gmail.com> wrote: > Davies and Reynold, > > Glad to hear about the status. > > I’ve seen [SPARK-7813](https://issues.apache.org/jira/browse/SPARK-7813) > and watching it now. > > If I understand correctly, it’s aimed at moving CodeGenerator’s > expressionEvaluator’s code-gen logic into each expressions’ eval() and > eliminating to chose between row evaluation methods in Physical Operators? > What’s the reason motives this refactoring job? to use code-gen version > aggressively in evaluation? > > > On May 22, 2015 at 3:05:24 PM, Xin Reynold (r...@databricks.com) wrote: > > Yijie, > > As Davies said, it will take us a while to get to vectorized execution. > However, before that, we are going to refactor code generation to push it > into each expression: https://issues.apache.org/jira/browse/SPARK-7813 > > Once this one is in (probably in the next 2 or 3 weeks), there will be > lots of expressions to create code-gen versions, and it'd be great to get > as much help as possible from the community. > > > > > On Thu, May 21, 2015 at 1:59 PM, Davies Liu <dav...@databricks.com> wrote: > >> We have not start to prototype the vectorized one yet, will evaluated >> in 1.5 and may targeted for 1.6. >> >> We're glad to hear some feedback/suggestions/comments from your side! >> >> On Thu, May 21, 2015 at 9:37 AM, Yijie Shen <henry.yijies...@gmail.com> >> wrote: >> > Hi all, >> > >> > I’ve seen the Blog of Project Tungsten here, it sounds awesome to me! >> > >> > I’ve also noticed there is a plan to change the code generation from >> > record-at-a-time evaluation to a vectorized one, which interests me >> most. >> > >> > What’s the status of vectorized evaluation? Is this an inner effort of >> > Databricks or welcome to be involved? >> > >> > Since I’ve done similar stuffs on Spark SQL, I would like to get >> involved if >> > that’s possible. >> > >> > >> > Yours, >> > >> > Yijie >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@spark.apache.org >> For additional commands, e-mail: dev-h...@spark.apache.org >> >> >
