GitHub user kunal642 opened a pull request:
https://github.com/apache/carbondata/pull/2869
[WIP] Changes for improving carbon reader performance
1. Added carbondata file listing for getting splits to avoid block/blocklet
datamap
loading when filter expressions is not provided by the user
2. Implemented Vectorized reader, exposes a property to switch between
record reader/vector reader.
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/kunal642/carbondata reader_perf_improvement
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/2869.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 #2869
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commit 8cf00c5dc94e8e3a1ee83a9e6416772a671f2830
Author: kunal642 <kunalkapoor642@...>
Date: 2018-10-26T06:13:22Z
Changes for improving carbon reader performance
1. Added carbondata file listing for getting splits to avoid block/blocklet
datamap
loading when filter expressions is not provided by the user
2. Implemented Vectorized reader, exposes a property to switch between
record reader/vector reader.
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