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From "Neeraja (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-1341) Provide efficient execution path to return metadata for BI tools
Date Tue, 26 Aug 2014 17:49:59 GMT
Neeraja created DRILL-1341:
------------------------------

             Summary: Provide efficient execution path to return metadata for BI tools
                 Key: DRILL-1341
                 URL: https://issues.apache.org/jira/browse/DRILL-1341
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 0.4.0
            Reporter: Neeraja


BI tools need metadata to work with query engines.
Some BI tool retrieve metadata and data in a single query, but majority of tools does this
in 2 steps. The first step is getting metadata and the second is actually use that metadata
to retrieve data.
The metadata query looks like below for ex: In tableau.
select * from (select * from dfs.`default`.`/opt/drill/raw-files/click1.json`) `TableauSQL`
where (0=1);

This tracking bug is to create an efficient execution path for Drill so that Drill recognizes
the metadata queries and returns it quickly rather than executing complete queries.





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