Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18866#discussion_r131654292
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/InsertIntoHiveTableSuite.scala
---
@@ -534,4 +534,29 @@ class InsertIntoHiveTableSuite extends QueryTest with
TestHiveSingleton with Bef
}
}
}
+
+ test("Insert data into hive bucketized table.") {
+ sql("""
+ |CREATE TABLE bucketizedTable (key int, value string)
+ |CLUSTERED BY (key) SORTED BY (key ASC) into 4 buckets
+ |ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t'
+ |""".stripMargin)
+ val identifier =
spark.sessionState.sqlParser.parseTableIdentifier("bucketizedTable")
+ val data = spark.sparkContext.parallelize((0 until 100)
+ .map(i => TestData(i, i.toString))).toDF()
+ data.write.mode(SaveMode.Overwrite).insertInto("bucketizedTable")
+ val dir = spark.sessionState.catalog.defaultTablePath(identifier)
+ val bucketFiles = new File(dir).listFiles().sortWith((a: File, b:
File) => {
+ a.getName < b.getName
+ }).filter(file => file.getName.startsWith("part-"))
+ assert(bucketFiles.length === 4)
+ (0 to 3).foreach { bucket =>
+ spark.read.format("text")
+ .load(bucketFiles(bucket).getAbsolutePath)
+ .collect().map(_.getString(0).split("\t")(0).toInt)
+ .zip((bucket to (100, 4))).foreach { case (a, b) =>
+ assert(a === b)
--- End diff --
This looks obscure. I need to verify it by calculating HiveHash values for
0 until 100. Maybe we should compute the actual hive hash value here, instead
of `bucket to (100, 4)`.
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