Github user windpiger commented on a diff in the pull request:
https://github.com/apache/spark/pull/16910#discussion_r104309883
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveDDLSuite.scala
---
@@ -1588,6 +1596,147 @@ class HiveDDLSuite
}
}
+ test("insert data to a hive serde table which has a non-existing
location should succeed") {
+ withTable("t") {
+ withTempDir { dir =>
+ spark.sql(
+ s"""
+ |CREATE TABLE t(a string, b int)
+ |USING hive
+ |LOCATION '$dir'
+ """.stripMargin)
+ val table =
spark.sessionState.catalog.getTableMetadata(TableIdentifier("t"))
+ assert(new Path(table.location) ==
makeQualifiedPath(dir.getAbsolutePath))
+
+ val tableLocFile = new File(new URI(table.location))
+ tableLocFile.delete()
+ assert(!tableLocFile.exists())
+ spark.sql("INSERT INTO TABLE t SELECT 'c', 1")
+ assert(tableLocFile.exists())
+ checkAnswer(spark.table("t"), Row("c", 1) :: Nil)
+
+ Utils.deleteRecursively(dir)
+ assert(!tableLocFile.exists())
+ spark.sql("INSERT OVERWRITE TABLE t SELECT 'c', 1")
+ assert(tableLocFile.exists())
+ checkAnswer(spark.table("t"), Row("c", 1) :: Nil)
+
+ val newDirFile = new File(dir, "x")
+ val newDirPath = newDirFile.getAbsolutePath
+ spark.sql(s"ALTER TABLE t SET LOCATION '$newDirPath'")
+ spark.sessionState.catalog.refreshTable(TableIdentifier("t"))
+
+ val table1 =
spark.sessionState.catalog.getTableMetadata(TableIdentifier("t"))
+ assert(table1.location == newDirPath)
+ assert(!newDirFile.exists())
+
+ spark.sql("INSERT INTO TABLE t SELECT 'c', 1")
+ checkAnswer(spark.table("t"), Row("c", 1) :: Nil)
+ assert(newDirFile.exists())
+ }
+ }
+ }
+
+ test("insert into a hive serde table with non-existing partition
location should succeed") {
+ withTable("t") {
+ withTempDir { dir =>
+ spark.sql(
+ s"""
+ |CREATE TABLE t(a int, b int, c int, d int)
+ |USING hive
+ |PARTITIONED BY(a, b)
+ |LOCATION "$dir"
+ """.stripMargin)
+ val table =
spark.sessionState.catalog.getTableMetadata(TableIdentifier("t"))
+ assert(new Path(table.location) ==
makeQualifiedPath(dir.getAbsolutePath))
+
+ spark.sql("INSERT INTO TABLE t PARTITION(a=1, b=2) SELECT 3, 4")
+ checkAnswer(spark.table("t"), Row(3, 4, 1, 2) :: Nil)
+
+ val partLoc = new File(dir, "a=1")
+ Utils.deleteRecursively(partLoc)
+ assert(!partLoc.exists())
+ // insert overwrite into a partition which location has been
deleted.
+ spark.sql("INSERT OVERWRITE TABLE t PARTITION(a=1, b=2) SELECT 7,
8")
+ assert(partLoc.exists())
+ checkAnswer(spark.table("t"), Row(7, 8, 1, 2) :: Nil)
+
+ val newDirFile = new File(dir, "x")
+ val newDirPath = newDirFile.getAbsolutePath
+ spark.sql(s"ALTER TABLE t PARTITION(a=1, b=2) SET LOCATION
'$newDirPath'")
+ assert(!newDirFile.exists())
+
+ // insert into a partition which location does not exists.
+ spark.sql("INSERT INTO TABLE t PARTITION(a=1, b=2) SELECT 9, 10")
+ assert(newDirFile.exists())
+ checkAnswer(spark.table("t"), Row(9, 10, 1, 2) :: Nil)
+ }
+ }
+ }
+
+ test("read data from a hive serde table which has a non-existing
location should succeed") {
+ withTable("t") {
+ withTempDir { dir =>
+ spark.sql(
+ s"""
+ |CREATE TABLE t(a string, b int)
+ |USING hive
+ |LOCATION "$dir"
+ """.stripMargin)
+ val table =
spark.sessionState.catalog.getTableMetadata(TableIdentifier("t"))
+ assert(new Path(table.location) ==
makeQualifiedPath(dir.getAbsolutePath))
+
+ dir.delete()
+ checkAnswer(spark.table("t"), Nil)
+
+ val newDirFile = new File(dir, "x")
+ val newDirPath = newDirFile.getAbsolutePath
+ spark.sql(s"ALTER TABLE t SET LOCATION '$newDirPath'")
+
+ val table1 =
spark.sessionState.catalog.getTableMetadata(TableIdentifier("t"))
+ assert(table1.location == newDirPath)
+ assert(!newDirFile.exists())
+ checkAnswer(spark.table("t"), Nil)
+ }
+ }
+ }
+
+ test("read data from a hive serde table with non-existing partition
location should succeed") {
+ withTable("t") {
+ withTempDir { dir =>
+ spark.sql(
+ s"""
+ |CREATE TABLE t(a int, b int, c int, d int)
+ |USING hive
+ |PARTITIONED BY(a, b)
+ |LOCATION "$dir"
+ """.stripMargin)
+ spark.sql("INSERT INTO TABLE t PARTITION(a=1, b=2) SELECT 3, 4")
+ checkAnswer(spark.table("t"), Row(3, 4, 1, 2) :: Nil)
+
+ val newDirFile = new File(dir, "x")
+ val newDirPath = newDirFile.getAbsolutePath
+ spark.sql(s"ALTER TABLE t PARTITION(a=1, b=2) SET LOCATION
'$newDirPath'")
+ assert(!newDirFile.exists())
+ // select from a partition which location has changed to a not
existed location
+ withSQLConf(SQLConf.HIVE_VERIFY_PARTITION_PATH.key -> "true") {
--- End diff --
Yes, hive return empty , if there is a bug here(could you describe what the
bug is?), we can remove the conf ,and always return result?
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