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Posted to issues@spark.apache.org by "Sameer Agarwal (JIRA)" <ji...@apache.org> on 2016/03/16 02:08:33 UTC

[jira] [Created] (SPARK-13922) Filter rows with null attributes in parquet vectorized reader

Sameer Agarwal created SPARK-13922:
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             Summary: Filter rows with null attributes in parquet vectorized reader
                 Key: SPARK-13922
                 URL: https://issues.apache.org/jira/browse/SPARK-13922
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Sameer Agarwal


It's common for many SQL operators to not care about reading null values for correctness. Currently, this is achieved by performing `isNotNull` checks (for  all relevant columns) on a per-row basis. Pushing these null filters in parquet vectorized reader should bring considerable benefits (especially for cases when the underlying data doesn't contain any nulls or contains all nulls).



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