Fixing compilation

Author: Alexey Kudinkin

hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/testutils/HoodieClientTestHarness.java

@@ -199,7 +199,7 @@ protected void initSparkContexts(String appName) {
 
     if (sparkSessionExtensionsInjector.isPresent()) {
       // In case we need to inject extensions into Spark Session, we have
-      // to stop any session that might still be active and since Spark will try
+      // to stop any session that might still be active, since Spark will try
       // to re-use it
       HoodieConversionUtils.toJavaOption(SparkSession.getActiveSession())
           .ifPresent(SparkSession::stop);

hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/DefaultSource.scala

@@ -26,8 +26,6 @@ import org.apache.hudi.common.model.HoodieTableType.{COPY_ON_WRITE, MERGE_ON_REA
 import org.apache.hudi.common.table.timeline.HoodieInstant
 import org.apache.hudi.common.table.{HoodieTableMetaClient, TableSchemaResolver}
 import org.apache.hudi.exception.HoodieException
-import org.apache.hudi.internal.schema.InternalSchema
-import org.apache.hudi.metadata.HoodieTableMetadata
 import org.apache.hudi.metadata.HoodieTableMetadata.isMetadataTable
 import org.apache.log4j.LogManager
 import org.apache.spark.sql.execution.streaming.{Sink, Source}
@@ -226,26 +224,6 @@ class DefaultSource extends RelationProvider
     new HoodieStreamSource(sqlContext, metadataPath, schema, parameters)
   }
 
-  private def resolveBaseFileOnlyRelation(sqlContext: SQLContext,
-                                          globPaths: Seq[Path],
-                                          userSchema: Option[StructType],
-                                          metaClient: HoodieTableMetaClient,
-                                          optParams: Map[String, String]): BaseRelation = {
-    val baseRelation = new BaseFileOnlyRelation(sqlContext, metaClient, optParams, userSchema, globPaths)
-    val enableSchemaOnRead: Boolean = !tryFetchInternalSchema(metaClient).isEmptySchema
-
-    // NOTE: We fallback to [[HadoopFsRelation]] in all of the cases except ones requiring usage of
-    //       [[BaseFileOnlyRelation]] to function correctly. This is necessary to maintain performance parity w/
-    //       vanilla Spark, since some of the Spark optimizations are predicated on the using of [[HadoopFsRelation]].
-    //
-    //       You can check out HUDI-3896 for more details
-    if (enableSchemaOnRead) {
-      baseRelation
-    } else {
-      baseRelation.toHadoopFsRelation
-    }
-  }
-
   private def resolveBaseFileOnlyRelation(sqlContext: SQLContext,
                                           globPaths: Seq[Path],
                                           userSchema: Option[StructType],

hudi-spark-datasource/hudi-spark/src/test/scala/org/apache/hudi/functional/TestCOWDataSource.scala

@@ -94,12 +94,6 @@ class TestCOWDataSource extends HoodieClientTestBase {
     System.gc()
   }
 
-  override def getSparkSessionExtensionsInjector: util.Option[Consumer[SparkSessionExtensions]] =
-    toJavaOption(
-      Some(
-        JFunction.toJava((receiver: SparkSessionExtensions) => new HoodieSparkSessionExtension().apply(receiver)))
-    )
-
   @Test def testShortNameStorage() {
     // Insert Operation
     val records = recordsToStrings(dataGen.generateInserts("000", 100)).toList