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From "Michael Armbrust (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-2443) Reading from Partitioned Tables is Slow
Date Fri, 11 Jul 2014 00:51:05 GMT
Michael Armbrust created SPARK-2443:
---------------------------------------

             Summary: Reading from Partitioned Tables is Slow
                 Key: SPARK-2443
                 URL: https://issues.apache.org/jira/browse/SPARK-2443
             Project: Spark
          Issue Type: Bug
          Components: SQL
            Reporter: Michael Armbrust
            Assignee: Zongheng Yang


Here are some numbers, all queries return ~20million:

SELECT COUNT(*) FROM <non partitioned table>
5.496467726 s

SELECT COUNT(*) FROM <partitioned table stored in parquet>
50.266666947 s

SELECT COUNT(*) FROM <same table as previous but loaded with parquetFile instead of through
hive>
2s



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