GitHub user manishgupta88 opened a pull request:
https://github.com/apache/carbondata/pull/3039
[WIP] Optimize implicit filter expression performance by removing extra
serialization
Fixed performance issue for Implicit filter column
1. Removed serialization all the implicit filter values in each task.
Instead serialized values only for the blocks going to particular task
2. Removed 2 times deserialization of implicit filter values in executor
for each task. 1 time is sufficient
Be sure to do all of the following checklist to help us incorporate
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- [ ] 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
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- How it is tested? Please attach test report.
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/manishgupta88/carbondata
implicit_column_filter_serialization
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/3039.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 #3039
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commit 73390e08aad788698dd9f12e3513a4a4814afd73
Author: manishgupta88 <tomanishgupta18@...>
Date: 2018-12-27T09:48:07Z
Fixed performance issue for Implicit filter column
1. Removed serialization all the implicit filter values in each task.
Instead serialized values only for the blocks going to particular task
2. Removed 2 times deserialization of implicit filter values in executor
for each task. 1 time is sufficient
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