fix idea warning of cannot find scala lib, fix code complie error for…

… different scala version (#227)

fix #182

Co-authored-by: jinsilei <jinsilei@corp.netease.com>

spark/v3.1/spark/pom.xml

@@ -69,6 +69,20 @@
             </exclusions>
         </dependency>
 
+        <dependency>
+            <groupId>org.scala-lang</groupId>
+            <artifactId>scala-library</artifactId>
+            <version>${scala.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.scala-lang</groupId>
+            <artifactId>scala-compiler</artifactId>
+            <version>${scala.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
         <dependency>
             <groupId>org.apache.spark</groupId>
             <artifactId>spark-core_2.12</artifactId>

spark/v3.1/spark/src/main/scala/com/netease/arctic/spark/sql/execution/DescribeKeyedTableExec.scala

@@ -28,6 +28,7 @@ import org.apache.spark.sql.execution.datasources.v2.V2CommandExec
 import org.apache.spark.sql.types.{MetadataBuilder, StringType, StructField, StructType}
 
 import scala.collection.JavaConverters.mapAsScalaMapConverter
+import scala.collection.convert.ImplicitConversions.`collection AsScalaIterable`
 import scala.collection.mutable.ArrayBuffer
 
 case class DescribeKeyedTableExec(table: Table,
@@ -58,7 +59,7 @@ case class DescribeKeyedTableExec(table: Table,
         if (!table.primaryKeySpec.primaryKeyExisted()) {
           rows += toCatalystRow("Not keyed table", "", "")
         } else {
-          table.primaryKeySpec().primaryKeyStruct().fields().forEach( k => {
+          table.primaryKeySpec().primaryKeyStruct().fields().toSeq.foreach( k => {
             rows += toCatalystRow(k.name(), k.`type`().toString, "")
           })
         }