GitHub user ravipesala opened a pull request:
https://github.com/apache/carbondata/pull/2819
[CARBONDATA-3012] Added support for full scan queries for vector direct
fill.
After decompressing the page in our V3 reader we can immediately fill the
data to a vector without any condition checks inside loops. So here complete
column page data is set to column vector in a single batch and gives back data
to Spark/Presto.
For this purpose, a new method is added in `ColumnPageDecoder`
```
ColumnPage decodeAndFillVector(byte[] input, int offset, int length,
ColumnVectorInfo vectorInfo,
BitSet nullBits, boolean isLVEncoded)
```
The above method takes vector fill it in a single loop without any checks
inside loop.
And also added new method inside `DimensionDataChunkStore`
```
void fillVector(int[] invertedIndex, int[] invertedIndexReverse, byte[]
data,
ColumnVectorInfo vectorInfo);
```
The above method takes vector fill it in a single loop without any checks
inside loop.
Be sure to do all of the following checklist to help us incorporate
your contribution quickly and easily:
- [ ] Any interfaces changed?
- [ ] Any backward compatibility impacted?
- [ ] Document update required?
- [ ] Testing done
Please provide details on
- Whether new unit test cases have been added or why no new tests
are required?
- How it is tested? Please attach test report.
- Is it a performance related change? Please attach the performance
test report.
- Any additional information to help reviewers in testing this
change.
- [ ] For large changes, please consider breaking it into sub-tasks under
an umbrella JIRA.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ravipesala/incubator-carbondata perf-full-scan
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/2819.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 #2819
----
commit 358299f90df98272723f22f43ab025bd1e7fa3e8
Author: ravipesala <ravi.pesala@...>
Date: 2018-10-16T05:02:18Z
Add carbon property to configure vector based row pruning push down
commit 658d8cb02b657e9b5887c0348971b9d92087fab2
Author: ravipesala <ravi.pesala@...>
Date: 2018-10-16T06:00:43Z
Added support for full scan queries for vector direct fill.
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