akashrn5 commented on a change in pull request #3869:
URL:
https://github.com/apache/carbondata/pull/3869#discussion_r463434191##########
File path: index/secondary-index/src/test/scala/org/apache/carbondata/spark/testsuite/secondaryindex/TestCreateIndexTable.scala
##########
@@ -370,6 +370,38 @@ class TestCreateIndexTable extends QueryTest with BeforeAndAfterAll {
}
}
+ test("index creation on long string columns") {
+ sql("drop table if exists si_table")
Review comment:
just create a small table which has varchar column, no need to do any dataload here, as intension is just to throw an exception for long string columns.
##########
File path: integration/spark/src/main/scala/org/apache/spark/sql/secondaryindex/command/SICreationCommand.scala
##########
@@ -253,6 +253,17 @@ private[sql] case class CarbonCreateSecondaryIndexCommand(
throw new ErrorMessage(
s"Table [$tableName] under database [$databaseName] is already an index table")
}
+ // creation of index on long string columns are not supported
+ for (indexColName <- indexModel.columnNames) {
+ for (dim <- dims) {
+ if (indexColName.equals(dim.getColName) && dim.getDataType.getName.equals("VARCHAR")) {
+ throw new ErrorMessage(
+ s"one or more index columns specified cannot be of Long String property" +
+ s" column in table $databaseName.$tableName")
+ }
+ }
+ }
+
Review comment:
instead of using a standard for loop, can change to this,
> if (dims.filter(dimension => indexModel.columnNames
> .contains(dimension.getColName))
> .map(_.getDataType)
> .exists(dataType => dataType.equals(DataTypes.VARCHAR)) ) {
> throw new ErrorMessage(
> s"one or more index columns specified contains long string column" +
> s" in table $databaseName.$tableName. SI cannot be created on long string columns")
> }
>
in a more functional way
##########
File path: index/secondary-index/src/test/scala/org/apache/carbondata/spark/testsuite/secondaryindex/TestCreateIndexTable.scala
##########
@@ -370,6 +370,38 @@ class TestCreateIndexTable extends QueryTest with BeforeAndAfterAll {
}
}
+ test("index creation on long string columns") {
+ sql("drop table if exists si_table")
+ sql(
+ s"""
+ | CREATE TABLE si_table(
+ | id INT,
+ | name STRING,
+ | city STRING,
+ | salary FLOAT,
+ | tax DECIMAL(8,2),
+ | percent double,
+ | birthday DATE,
+ | register TIMESTAMP,
+ | updated TIMESTAMP,
+ | longstr STRING,
+ | file struct<school:array<string>, age:int>
+ | )
+ | STORED AS carbondata
+ | TBLPROPERTIES(
+ | 'LONG_STRING_COLUMNS'='longstr, name')
+ | """.stripMargin)
+ sql(
+ s"LOAD DATA LOCAL INPATH '$resourcesPath/streamSample_with_long_string.csv' INTO TABLE si_table OPTIONS" +
+ "('HEADER'='true','COMPLEX_DELIMITER_LEVEL_1'='$', 'COMPLEX_DELIMITER_LEVEL_2'=':')")
+
+ sql("drop index if exists temp_ind on si_table")
+ val thrown = intercept[Exception] {
+ sql("create index temp_ind on table si_table (longstr) AS 'carbondata'")
+ }
+ assert(thrown.getMessage === "one or more index columns specified cannot be of Long String property column in table default.si_table")
Review comment:
check `thrown.getMessage.contains("")` instad of `==`
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