[jira] [Created] (SPARK-16010) Code Refactoring, Test Case Improvement and Description Updates for SQLConf spark.sql.parquet.filterPushdown

["Xiao Li (JIRA)" <ji...@apache.org>]

Xiao Li created SPARK-16010:
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             Summary: Code Refactoring, Test Case Improvement and Description Updates for SQLConf spark.sql.parquet.filterPushdown 
                 Key: SPARK-16010
                 URL: https://issues.apache.org/jira/browse/SPARK-16010
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.0.0
            Reporter: Xiao Li


Starting Spark 2.0, vectorized decoding is introduced for parquet reading. This feature changes the filter pushdown behavior of parquet reading. Thus, we need to update the out-of-dated description of two external `SQLConf`: `spark.sql.parquet.filterPushdown` and `spark.sql.parquet.enableVectorizedReader`. 

The code for building `parquetReader` can be slightly simplified for easy maintenance. 

The current test cases do not verify the behavior when `spark.sql.parquet.filterPushdown` is set to `false`, a test case for improving the test case coverage. 



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