HyukjinKwon commented on a change in pull request #23506: [SPARK-26577][SQL]
Add input optimizer when reading Hive table by SparkSQL
URL: https://github.com/apache/spark/pull/23506#discussion_r248142738
##########
File path:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveTableScanSuite.scala
##########
@@ -192,4 +192,47 @@ class HiveTableScanSuite extends HiveComparisonTest with
SQLTestUtils with TestH
case p: HiveTableScanExec => p
}.get
}
-}
+
+ test("Test the InputFormat optimizer") {
+ withTable("table_old", "table_pt_old", "table_new", "table_pt_new") {
+ sql("set spark.sql.hive.fileInputFormat.enabled=true")
+ sql("set spark.sql.hive.fileInputFormat.split.maxsize=134217728")
+ sql("set spark.sql.hive.fileInputFormat.split.minsize=134217728")
+ sql(
+ s"""
+ |CREATE TABLE table_old (id int)
+ |STORED AS
+ |INPUTFORMAT 'org.apache.hadoop.mapred.TextInputFormat'
+ |OUTPUTFORMAT
'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
+ """.stripMargin)
+ sql(
+ s"""
+ |CREATE TABLE table_pt_old (id int)
+ |PARTITIONED BY (a int, b int)
+ |STORED AS
+ |INPUTFORMAT 'org.apache.hadoop.mapred.TextInputFormat'
Review comment:
If it's already possible, let's don't do this. Is there any downside of
using `CombineTextInputFormat` at the first place? We can control the split
size via configurations.
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