GitHub user kevinjmh opened a pull request:
https://github.com/apache/carbondata/pull/2900
[CARBONDATA-3078] Disable explain collector for count star query without
filter
An issue is found about count star query without filter in explain command.
It is a special case. It uses different plan.
Considering
no useful information about block/blocklet pruning for count star query
without filter, so disable explain collector and avoid the exception in
https://issues.apache.org/jira/browse/CARBONDATA-3078
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/kevinjmh/carbondata explain_countstar
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/2900.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 #2900
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commit 46f07a25924e98d43dd9dcfad3a1c7cb0cd4d895
Author: Manhua <kevinjmh@...>
Date: 2018-11-05T12:17:59Z
disable explain collector for count star query without filter
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