GitHub user anubhav100 opened a pull request:
https://github.com/apache/carbondata/pull/1218
[CARBONDATA-1347] Implemented Columnar Reading Of Data For Presto
This Pr is Consists of following fixes
- implemented columanr based iterator and executor for reading columns
instead of rows
- create a new improved dictionarydecoder with scala
- added the lazy blocks
- removed the redundant execution of parsing filters using map
-removed the useless code and redudant intilizations
- Tested manually for all queries
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/anubhav100/incubator-carbondata
CARBONDATA-1347
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/1218.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 #1218
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commit fefc498650a9d57b718f4521c14bee874b5c7d00
Author: anubhav100 <[email protected]>
Date: 2017-07-31T06:08:27Z
implemented columnar read for presto
commit 014e972faad4c51a16473fd965be7428b4bcc55a
Author: anubhav100 <[email protected]>
Date: 2017-07-31T10:36:35Z
reverted the pom.xml for presto
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