[SPARK-35045][SQL] Add an internal option to control input buffer in …

…univocity

This PR makes the input buffer configurable (as an internal option). This is mainly to work around uniVocity/univocity-parsers#449.

To work around uniVocity/univocity-parsers#449.

No, it's only internal option.

Manually tested by modifying the unittest added in #31858 as below:

```diff
diff --git a/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala
index fd25a79619d..b58f0bd3661 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala
 -2460,6 +2460,7  abstract class CSVSuite
       Seq(line).toDF.write.text(path.getAbsolutePath)
       assert(spark.read.format("csv")
         .option("delimiter", "|")
+        .option("inputBufferSize", "128")
         .option("ignoreTrailingWhiteSpace", "true").load(path.getAbsolutePath).count() == 1)
     }
   }
```

Closes #32145 from HyukjinKwon/SPARK-35045.

Lead-authored-by: Hyukjin Kwon <gurwls223@apache.org>
Co-authored-by: HyukjinKwon <gurwls223@apache.org>
Signed-off-by: Max Gekk <max.gekk@gmail.com>
(cherry picked from commit 1f56215)
Signed-off-by: Max Gekk <max.gekk@gmail.com>

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/csv/CSVOptions.scala

@@ -211,6 +211,8 @@ class CSVOptions(
   }
   val lineSeparatorInWrite: Option[String] = lineSeparator
 
+  val inputBufferSize: Option[Int] = parameters.get("inputBufferSize").map(_.toInt)
+
   def asWriterSettings: CsvWriterSettings = {
     val writerSettings = new CsvWriterSettings()
     val format = writerSettings.getFormat
@@ -251,6 +253,7 @@ class CSVOptions(
     settings.setIgnoreLeadingWhitespaces(ignoreLeadingWhiteSpaceInRead)
     settings.setIgnoreTrailingWhitespaces(ignoreTrailingWhiteSpaceInRead)
     settings.setReadInputOnSeparateThread(false)
+    inputBufferSize.foreach(settings.setInputBufferSize)
     settings.setMaxColumns(maxColumns)
     settings.setNullValue(nullValue)
     settings.setEmptyValue(emptyValueInRead)