GitHub user amansinha100 opened a pull request:
https://github.com/apache/drill/pull/519
DRILL-4530: Optimize partition pruning with metadata caching for the â¦
â¦single partition case.
- Enhance PruneScanRule to detect single partitions based on referenced
dirs in the filter.
- Keep a new status of EXPANDED_PARTIAL for FileSelection.
- Create separate .directories metadata file to prune directories first
before files.
- Introduce cacheFileRoot attribute to keep track of the parent directory
of the cache file after partition pruning.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/amansinha100/incubator-drill DRILL-4530-1
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/519.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 #519
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commit 9c9687e804fa05c8f4b7b065738c458cb88bf5c4
Author: Aman Sinha <asi...@maprtech.com>
Date: 2016-03-25T19:55:59Z
DRILL-4530: Optimize partition pruning with metadata caching for the single
partition case.
- Enhance PruneScanRule to detect single partitions based on referenced
dirs in the filter.
- Keep a new status of EXPANDED_PARTIAL for FileSelection.
- Create separate .directories metadata file to prune directories first
before files.
- Introduce cacheFileRoot attribute to keep track of the parent directory
of the cache file after partition pruning.
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