GitHub user xubo245 opened a pull request: https://github.com/apache/carbondata/pull/2912
[WIP][CARBONDATA-3079] Improve the C++ SDK read performance by merging column in JNI supprt readNextStringRow and readNextBatchStringRow 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/xubo245/carbondata CARBONDATA-3079_mergeColumn Alternatively you can review and apply these changes as the patch at: https://github.com/apache/carbondata/pull/2912.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 #2912 ---- commit 4caf0a4427e81192d1dce76270f74a47c8418d24 Author: xubo245 <xubo29@...> Date: 2018-11-09T09:47:48Z [CARBONDATA-3079] Improve the C++ SDK read performance by merging column in JNI supprt readNextStringRow and readNextBatchStringRow test ---- ---