Michael Armbrust created SPARK-2443:
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             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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