GitHub user ashokblend opened a pull request:
https://github.com/apache/incubator-carbondata/pull/429
[CARBONDATA-530]Modified optimizer to place decoder on top of limit.
**Problem**
While optimizing plan of query which is having order by and limit, we put
outer decoder below limit. Because of this spark is not able to optimize the
plan.
**Solution**
We need to optimize the plan in such a way that outer decoder comes on top
of limit. as given below
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ashokblend/incubator-carbondata limit_decoder
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-carbondata/pull/429.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #429
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commit 1fc60fc56807307527bbccfe322a9f95b14c0a07
Author: ashok.blend <[email protected]>
Date: 2016-12-13T11:54:30Z
modified optimizer to place decoder on top of limit.
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