[SPARK-17636] Parquet predicate pushdown for nested fields

• Type: Sub-task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.6.2, 1.6.3, 2.0.2
• Fix Version/s: 3.0.0
• Component/s: Spark Core, SQL
• Assignee: DB Tsai
• Reporter: Mitesh
• Created: 22/Sep/16 16:28
• Updated: 30/Jun/20 12:03
• Resolved: 27/Mar/20 06:52

Description

There's a PushedFilters for a simple numeric field, but not for a numeric field inside a struct. Not sure if this is a Spark limitation because of Parquet, or only a Spark limitation.

scala> hc.read.parquet("s3a://some/parquet/file").select("day_timestamp", "sale_id")

res5: org.apache.spark.sql.DataFrame = [day_timestamp: struct<timestamp:bigint,timezone:string>, sale_id: bigint]

scala> res5.filter("sale_id > 4").queryExecution.executedPlan

res9: org.apache.spark.sql.execution.SparkPlan =
Filter[23814] [args=(sale_id#86324L > 4)][outPart=UnknownPartitioning(0)][outOrder=List()]
+- Scan ParquetRelation[day_timestamp#86302,sale_id#86324L] InputPaths: s3a://some/parquet/file, PushedFilters: [GreaterThan(sale_id,4)]

scala> res5.filter("day_timestamp.timestamp > 4").queryExecution.executedPlan

res10: org.apache.spark.sql.execution.SparkPlan =
Filter[23815] [args=(day_timestamp#86302.timestamp > 4)][outPart=UnknownPartitioning(0)][outOrder=List()]
+- Scan ParquetRelation[day_timestamp#86302,sale_id#86324L] InputPaths: s3a://some/parquet/file

Issue Links

• fixes: SPARK-25558 Pushdown predicates for nested fields in DataSource Strategy
• is duplicated by: SPARK-5151 Parquet Predicate Pushdown Does Not Work with Nested Structures.
• is duplicated by: SPARK-19638 Filter pushdown not working for struct fields
• links to: [Github] Pull Request #17006 (ndimiduk)
• links to: [Github] Pull Request #28955 (HyukjinKwon)
• links to: [Github] Pull Request #28955 (HyukjinKwon)
• links to: GitHub Pull Request #22535
• links to: GitHub Pull Request #27155
• links to: GitHub Pull Request #27728