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[SPARK-4493][SQL] Don't pushdown Eq, NotEq, Lt, LtEq, Gt and GtEq predicates with nulls for Parquet #3367

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[SPARK-4493][SQL] Don't pushdown Eq, NotEq, Lt, LtEq, Gt and GtEq predicates with nulls for Parquet #3367

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@liancheng liancheng commented Nov 19, 2014

Predicates like a = NULL and a < NULL can't be pushed down since Parquet Lt, LtEq, Gt, GtEq doesn't accept null value. Note that Eq and NotEq can only be used with null to represent predicates like a IS NULL and a IS NOT NULL.

However, normally this issue doesn't cause NPE because any value compared to NULL results NULL, and Spark SQL automatically optimizes out NULL predicate in the SimplifyFilters rule. Only testing code that intentionally disables the optimizer may trigger this issue. (That's why this issue is not marked as blocker and I do NOT think we need to backport this to branch-1.1

This PR restricts Lt, LtEq, Gt and GtEq to non-null values only, and only uses Eq with null value to pushdown IsNull and IsNotNull. Also, added support for Parquet NotEq filter for completeness and (tiny) performance gain, it's also used to pushdown IsNotNull.

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liancheng reviewed Nov 19, 2014
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sql/core/src/main/scala/org/apache/spark/sql/parquet/ParquetFilters.scala
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@liancheng liancheng Nov 19, 2014

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Binary.fromString and Binary.fromByteArray don't accept null.

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Maybe add this as a comment.

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SparkQA commented Nov 19, 2014

Test build #23612 has started for PR 3367 at commit de7de28.

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SparkQA commented Nov 19, 2014

Test build #23612 has finished for PR 3367 at commit de7de28.

  • This patch fails MiMa tests.
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  • This patch adds no public classes.

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AmplabJenkins commented Nov 19, 2014

Test FAILed.
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Test FAILed.

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liancheng commented Nov 20, 2014

Build failure due to syncing issue between GitHub and ASF Git repo.

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liancheng commented Nov 20, 2014

retest this please

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SparkQA commented Nov 20, 2014

Test build #23654 has started for PR 3367 at commit de7de28.

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SparkQA commented Nov 20, 2014

Test build #23654 has finished for PR 3367 at commit de7de28.

  • This patch fails PySpark unit tests.
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  • This patch adds no public classes.

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AmplabJenkins commented Nov 20, 2014

Test FAILed.
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Test FAILed.

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SparkQA commented Nov 20, 2014

Test build #530 has started for PR 3367 at commit de7de28.

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SparkQA commented Nov 21, 2014

Test build #530 has finished for PR 3367 at commit de7de28.

  • This patch passes all tests.
  • This patch merges cleanly.
  • This patch adds the following public classes (experimental):
    • class LinearBinaryClassificationModel(LinearModel):
    • class LogisticRegressionModel(LinearBinaryClassificationModel):
    • class LogisticRegressionWithLBFGS(object):
    • class SVMModel(LinearBinaryClassificationModel):
    • class Rating(namedtuple("Rating", ["user", "product", "rating"])):
    • class RDDRangeSampler(RDDSamplerBase):
    • class SizeLimitedStream(object):
    • class CompressedStream(object):
    • class LargeObjectSerializer(Serializer):
    • class CompressedSerializer(Serializer):

marmbrus
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sql/core/src/test/scala/org/apache/spark/sql/parquet/ParquetQuerySuite.scala Outdated
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Why var?

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marmbrus commented Dec 1, 2014

Minor comments, otherwise LGTM.

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liancheng commented Dec 2, 2014

Addressed all styling issues. Thanks!

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SparkQA commented Dec 2, 2014

Test build #24026 has started for PR 3367 at commit 12c9d1c.

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SparkQA commented Dec 2, 2014

Test build #24027 has started for PR 3367 at commit cc41281.

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SparkQA commented Dec 2, 2014

Test build #24026 has finished for PR 3367 at commit 12c9d1c.

  • This patch passes all tests.
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  • This patch adds no public classes.

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AmplabJenkins commented Dec 2, 2014

Test PASSed.
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Test build #24027 has finished for PR 3367 at commit cc41281.

  • This patch passes all tests.
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  • This patch adds no public classes.

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Test PASSed.
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marmbrus commented Dec 17, 2014

Thanks! Merged to master.

@asfgit asfgit closed this in 6277135 Dec 17, 2014
@liancheng liancheng deleted the filters-with-null branch December 18, 2014 04:17
This was referenced Dec 18, 2014
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asfgit pushed a commit that referenced this pull request Dec 30, 2014
@liancheng @marmbrus
[SPARK-4493][SQL] Tests for IsNull / IsNotNull in the ParquetFilterSuite
19a8802 
This is a follow-up of #3367 and #3644.

At the time #3644 was written, #3367 hadn't been merged yet, thus `IsNull` and `IsNotNull` filters are not covered in the first version of `ParquetFilterSuite`. This PR adds corresponding test cases.

<!-- Reviewable:start -->
[<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/apache/spark/3748)
<!-- Reviewable:end -->

Author: Cheng Lian <[email protected]>

Closes #3748 from liancheng/test-null-filters and squashes the following commits:

1ab943f [Cheng Lian] IsNull and IsNotNull Parquet filter test case for boolean type
bcd616b [Cheng Lian] Adds Parquet filter pushedown tests for IsNull and IsNotNull
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@liancheng @SparkQA @AmplabJenkins @marmbrus