[SPARK-15979][SQL] Rename various Parquet support classes.

## What changes were proposed in this pull request?
This patch renames various Parquet support classes from CatalystAbc to ParquetAbc. This new naming makes more sense for two reasons:

1. These are not optimizer related (i.e. Catalyst) classes.
2. We are in the Spark code base, and as a result it'd be more clear to call out these are Parquet support classes, rather than some Spark classes.

## How was this patch tested?
Renamed test cases as well.

Author: Reynold Xin <rxin@databricks.com>

Closes #13696 from rxin/parquet-rename.

1 files changed, 1 insertions, 5 deletions

diff --git a/mllib/src/main/scala/org/apache/spark/ml/source/libsvm/LibSVMRelation.scala b/mllib/src/main/scala/org/apache/spark/ml/source/libsvm/LibSVMRelation.scala
index b5b2a681e9..62e09d2e0c 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/source/libsvm/LibSVMRelation.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/source/libsvm/LibSVMRelation.scala
@@ -141,7 +141,7 @@ class LibSVMFileFormat extends TextBasedFileFormat with DataSourceRegister {
       sparkSession: SparkSession,
       options: Map[String, String],
       files: Seq[FileStatus]): Map[String, String] = {
-    def computeNumFeatures(): Int = {
+    val numFeatures = options.get("numFeatures").filter(_.toInt > 0).getOrElse {
       val dataFiles = files.filterNot(_.getPath.getName startsWith "_")
       val path = if (dataFiles.length == 1) {
         dataFiles.head.getPath.toUri.toString
@@ -156,10 +156,6 @@ class LibSVMFileFormat extends TextBasedFileFormat with DataSourceRegister {
       MLUtils.computeNumFeatures(parsed)
     }
 
-    val numFeatures = options.get("numFeatures").filter(_.toInt > 0).getOrElse {
-      computeNumFeatures()
-    }
-
     new CaseInsensitiveMap(options + ("numFeatures" -> numFeatures.toString))
   }