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Posted to dev@drill.apache.org by "Rahul Challapalli (JIRA)" <ji...@apache.org> on 2016/11/16 20:39:59 UTC

[jira] [Created] (DRILL-5046) Add documentation for directory based partition pruning

Rahul Challapalli created DRILL-5046:
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             Summary: Add documentation for directory based partition pruning
                 Key: DRILL-5046
                 URL: https://issues.apache.org/jira/browse/DRILL-5046
             Project: Apache Drill
          Issue Type: Bug
          Components: Documentation
    Affects Versions: 1.9.0
            Reporter: Rahul Challapalli
            Assignee: Bridget Bevens


Drill's documentation for partition pruning should cover the below 2 features

1. Directory based partition pruning
2. Partition pruning based on auto-partitioned parquet files

The first one seems to be missing from our documentation. At the very least we should cover

a. How we can leverage this feature to avoid full table scans
b. How this feature works in-conjunction with metadata cache pruning
c. A few examples which involve using wildcards for one of the sub-directories



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