[AURON #1523] Fix CheckStyle Violations in Auron Codebase. (#1523)

* Fix CheckStyle Violations in Auron Codebase.

Signed-off-by: slfan1989 <slfan1989@apache.org>

* Fix CheckStyle Violations in Auron Codebase.

Signed-off-by: slfan1989 <slfan1989@apache.org>

---------

Signed-off-by: slfan1989 <slfan1989@apache.org>

Author: slfan1989

spark-extension-shims-spark/src/test/scala/org/apache/spark/sql/auron/EmptyNativeRddSuite.scala

@@ -28,7 +28,7 @@ class EmptyNativeRddSuite
     assert(empty.collect().size === 0)
 
     val thrown = intercept[UnsupportedOperationException] {
-      empty.reduce((row1, row2) => {
+      empty.reduce((row1, _) => {
         row1
       })
     }

spark-extension/src/main/scala/org/apache/spark/sql/auron/AuronConverters.scala

@@ -1099,7 +1099,7 @@ object AuronConverters extends Logging {
           rddPartitioner = None,
           rddDependencies = Nil,
           false,
-          (_partition, _taskContext) => {
+          (_, _) => {
             val nativeEmptyExec = EmptyPartitionsExecNode
               .newBuilder()
               .setNumPartitions(outputPartitioning.numPartitions)

spark-extension/src/main/scala/org/apache/spark/sql/auron/NativeRDD.scala

@@ -104,7 +104,7 @@ class NativePlanWrapper(var p: (Partition, TaskContext) => PhysicalPlanNode)
   @throws[IOException]
   @throws[ClassNotFoundException]
   private def readObject(in: ObjectInputStream): Unit = {
-    val _init: Unit = NativePlanWrapper.changeProtobufDefaultRecursionLimit
+    NativePlanWrapper.changeProtobufDefaultRecursionLimit
     p = in.readObject.asInstanceOf[(Partition, TaskContext) => PhysicalPlanNode]
   }
 }

spark-extension/src/main/scala/org/apache/spark/sql/execution/auron/plan/NativeParquetScanBase.scala

@@ -63,7 +63,7 @@ abstract class NativeParquetScanBase(basedFileScan: FileSourceScanExec)
         None,
         Nil,
         rddShuffleReadFull = true,
-        (partition, _context) => {
+        (partition, _) => {
           val resourceId = s"NativeParquetScanExec:${UUID.randomUUID().toString}"
           putJniBridgeResource(resourceId, broadcastedHadoopConf)
 

spark-extension/src/main/scala/org/apache/spark/sql/execution/auron/shuffle/AuronBlockStoreShuffleReaderBase.scala

@@ -162,7 +162,7 @@ object AuronBlockStoreShuffleReaderBase extends Logging {
 
       case in: InputStreamToByteBuffer =>
         Some(in.toByteBuffer)
-      case in =>
+      case _ =>
         None
     }
   }

spark-version-annotation-macros/src/main/scala/org/apache/auron/sparkver.scala

@@ -62,9 +62,9 @@ object sparkver {
 
       impl(c)(annottees: _*) {
         val head = annottees.head.tree match {
-          case ClassDef(mods, name, tparams, Template(parents, self, _body)) =>
+          case ClassDef(mods, name, tparams, Template(parents, self, _)) =>
             ClassDef(mods, name, tparams, Template(parents, self, List(EmptyTree)))
-          case ModuleDef(mods, name, Template(parents, self, _body)) =>
+          case ModuleDef(mods, name, Template(parents, self, _)) =>
             ModuleDef(mods, name, Template(parents, self, List(EmptyTree)))
         }
         c.Expr(q"$head; ..${annottees.tail}")