[SPARK-20980][SQL] Rename wholeFile to multiLine for both CSV and JSON

### What changes were proposed in this pull request?
The current option name `wholeFile` is misleading for CSV users. Currently, it is not representing a record per file. Actually, one file could have multiple records. Thus, we should rename it. Now, the proposal is `multiLine`.

### How was this patch tested?
N/A

Author: Xiao Li <[email protected]>

Closes #18202 from gatorsmile/renameCVSOption.

Author: gatorsmile

R/pkg/R/SQLContext.R

@@ -334,7 +334,7 @@ setMethod("toDF", signature(x = "RDD"),
 #'
 #' Loads a JSON file, returning the result as a SparkDataFrame
 #' By default, (\href{http://jsonlines.org/}{JSON Lines text format or newline-delimited JSON}
-#' ) is supported. For JSON (one record per file), set a named property \code{wholeFile} to
+#' ) is supported. For JSON (one record per file), set a named property \code{multiLine} to
 #' \code{TRUE}.
 #' It goes through the entire dataset once to determine the schema.
 #'
@@ -348,7 +348,7 @@ setMethod("toDF", signature(x = "RDD"),
 #' sparkR.session()
 #' path <- "path/to/file.json"
 #' df <- read.json(path)
-#' df <- read.json(path, wholeFile = TRUE)
+#' df <- read.json(path, multiLine = TRUE)
 #' df <- jsonFile(path)
 #' }
 #' @name read.json
@@ -598,7 +598,7 @@ tableToDF <- function(tableName) {
 #' df1 <- read.df("path/to/file.json", source = "json")
 #' schema <- structType(structField("name", "string"),
 #'                      structField("info", "map<string,double>"))
-#' df2 <- read.df(mapTypeJsonPath, "json", schema, wholeFile = TRUE)
+#' df2 <- read.df(mapTypeJsonPath, "json", schema, multiLine = TRUE)
 #' df3 <- loadDF("data/test_table", "parquet", mergeSchema = "true")
 #' }
 #' @name read.df

python/pyspark/sql/readwriter.py

@@ -174,12 +174,12 @@ def json(self, path, schema=None, primitivesAsString=None, prefersDecimal=None,
              allowComments=None, allowUnquotedFieldNames=None, allowSingleQuotes=None,
              allowNumericLeadingZero=None, allowBackslashEscapingAnyCharacter=None,
              mode=None, columnNameOfCorruptRecord=None, dateFormat=None, timestampFormat=None,
-             wholeFile=None):
+             multiLine=None):
         """
         Loads JSON files and returns the results as a :class:`DataFrame`.
 
         `JSON Lines <http://jsonlines.org/>`_ (newline-delimited JSON) is supported by default.
-        For JSON (one record per file), set the ``wholeFile`` parameter to ``true``.
+        For JSON (one record per file), set the ``multiLine`` parameter to ``true``.
 
         If the ``schema`` parameter is not specified, this function goes
         through the input once to determine the input schema.
@@ -230,7 +230,7 @@ def json(self, path, schema=None, primitivesAsString=None, prefersDecimal=None,
                                 formats follow the formats at ``java.text.SimpleDateFormat``.
                                 This applies to timestamp type. If None is set, it uses the
                                 default value, ``yyyy-MM-dd'T'HH:mm:ss.SSSXXX``.
-        :param wholeFile: parse one record, which may span multiple lines, per file. If None is
+        :param multiLine: parse one record, which may span multiple lines, per file. If None is
                           set, it uses the default value, ``false``.
 
         >>> df1 = spark.read.json('python/test_support/sql/people.json')
@@ -248,7 +248,7 @@ def json(self, path, schema=None, primitivesAsString=None, prefersDecimal=None,
             allowSingleQuotes=allowSingleQuotes, allowNumericLeadingZero=allowNumericLeadingZero,
             allowBackslashEscapingAnyCharacter=allowBackslashEscapingAnyCharacter,
             mode=mode, columnNameOfCorruptRecord=columnNameOfCorruptRecord, dateFormat=dateFormat,
-            timestampFormat=timestampFormat, wholeFile=wholeFile)
+            timestampFormat=timestampFormat, multiLine=multiLine)
         if isinstance(path, basestring):
             path = [path]
         if type(path) == list:
@@ -322,7 +322,7 @@ def csv(self, path, schema=None, sep=None, encoding=None, quote=None, escape=Non
             ignoreTrailingWhiteSpace=None, nullValue=None, nanValue=None, positiveInf=None,
             negativeInf=None, dateFormat=None, timestampFormat=None, maxColumns=None,
             maxCharsPerColumn=None, maxMalformedLogPerPartition=None, mode=None,
-            columnNameOfCorruptRecord=None, wholeFile=None):
+            columnNameOfCorruptRecord=None, multiLine=None):
         """Loads a CSV file and returns the result as a  :class:`DataFrame`.
 
         This function will go through the input once to determine the input schema if
@@ -396,7 +396,7 @@ def csv(self, path, schema=None, sep=None, encoding=None, quote=None, escape=Non
                                           ``spark.sql.columnNameOfCorruptRecord``. If None is set,
                                           it uses the value specified in
                                           ``spark.sql.columnNameOfCorruptRecord``.
-        :param wholeFile: parse records, which may span multiple lines. If None is
+        :param multiLine: parse records, which may span multiple lines. If None is
                           set, it uses the default value, ``false``.
 
         >>> df = spark.read.csv('python/test_support/sql/ages.csv')
@@ -411,7 +411,7 @@ def csv(self, path, schema=None, sep=None, encoding=None, quote=None, escape=Non
             dateFormat=dateFormat, timestampFormat=timestampFormat, maxColumns=maxColumns,
             maxCharsPerColumn=maxCharsPerColumn,
             maxMalformedLogPerPartition=maxMalformedLogPerPartition, mode=mode,
-            columnNameOfCorruptRecord=columnNameOfCorruptRecord, wholeFile=wholeFile)
+            columnNameOfCorruptRecord=columnNameOfCorruptRecord, multiLine=multiLine)
         if isinstance(path, basestring):
             path = [path]
         return self._df(self._jreader.csv(self._spark._sc._jvm.PythonUtils.toSeq(path)))

python/pyspark/sql/streaming.py

@@ -401,12 +401,12 @@ def json(self, path, schema=None, primitivesAsString=None, prefersDecimal=None,
              allowComments=None, allowUnquotedFieldNames=None, allowSingleQuotes=None,
              allowNumericLeadingZero=None, allowBackslashEscapingAnyCharacter=None,
              mode=None, columnNameOfCorruptRecord=None, dateFormat=None, timestampFormat=None,
-             wholeFile=None):
+             multiLine=None):
         """
         Loads a JSON file stream and returns the results as a :class:`DataFrame`.
 
         `JSON Lines <http://jsonlines.org/>`_ (newline-delimited JSON) is supported by default.
-        For JSON (one record per file), set the ``wholeFile`` parameter to ``true``.
+        For JSON (one record per file), set the ``multiLine`` parameter to ``true``.
 
         If the ``schema`` parameter is not specified, this function goes
         through the input once to determine the input schema.
@@ -458,7 +458,7 @@ def json(self, path, schema=None, primitivesAsString=None, prefersDecimal=None,
                                 formats follow the formats at ``java.text.SimpleDateFormat``.
                                 This applies to timestamp type. If None is set, it uses the
                                 default value, ``yyyy-MM-dd'T'HH:mm:ss.SSSXXX``.
-        :param wholeFile: parse one record, which may span multiple lines, per file. If None is
+        :param multiLine: parse one record, which may span multiple lines, per file. If None is
                           set, it uses the default value, ``false``.
 
         >>> json_sdf = spark.readStream.json(tempfile.mkdtemp(), schema = sdf_schema)
@@ -473,7 +473,7 @@ def json(self, path, schema=None, primitivesAsString=None, prefersDecimal=None,
             allowSingleQuotes=allowSingleQuotes, allowNumericLeadingZero=allowNumericLeadingZero,
             allowBackslashEscapingAnyCharacter=allowBackslashEscapingAnyCharacter,
             mode=mode, columnNameOfCorruptRecord=columnNameOfCorruptRecord, dateFormat=dateFormat,
-            timestampFormat=timestampFormat, wholeFile=wholeFile)
+            timestampFormat=timestampFormat, multiLine=multiLine)
         if isinstance(path, basestring):
             return self._df(self._jreader.json(path))
         else:
@@ -532,7 +532,7 @@ def csv(self, path, schema=None, sep=None, encoding=None, quote=None, escape=Non
             ignoreTrailingWhiteSpace=None, nullValue=None, nanValue=None, positiveInf=None,
             negativeInf=None, dateFormat=None, timestampFormat=None, maxColumns=None,
             maxCharsPerColumn=None, maxMalformedLogPerPartition=None, mode=None,
-            columnNameOfCorruptRecord=None, wholeFile=None):
+            columnNameOfCorruptRecord=None, multiLine=None):
         """Loads a CSV file stream and returns the result as a  :class:`DataFrame`.
 
         This function will go through the input once to determine the input schema if
@@ -607,7 +607,7 @@ def csv(self, path, schema=None, sep=None, encoding=None, quote=None, escape=Non
                                           ``spark.sql.columnNameOfCorruptRecord``. If None is set,
                                           it uses the value specified in
                                           ``spark.sql.columnNameOfCorruptRecord``.
-        :param wholeFile: parse one record, which may span multiple lines. If None is
+        :param multiLine: parse one record, which may span multiple lines. If None is
                           set, it uses the default value, ``false``.
 
         >>> csv_sdf = spark.readStream.csv(tempfile.mkdtemp(), schema = sdf_schema)
@@ -624,7 +624,7 @@ def csv(self, path, schema=None, sep=None, encoding=None, quote=None, escape=Non
             dateFormat=dateFormat, timestampFormat=timestampFormat, maxColumns=maxColumns,
             maxCharsPerColumn=maxCharsPerColumn,
             maxMalformedLogPerPartition=maxMalformedLogPerPartition, mode=mode,
-            columnNameOfCorruptRecord=columnNameOfCorruptRecord, wholeFile=wholeFile)
+            columnNameOfCorruptRecord=columnNameOfCorruptRecord, multiLine=multiLine)
         if isinstance(path, basestring):
             return self._df(self._jreader.csv(path))
         else:

python/pyspark/sql/tests.py

@@ -457,15 +457,15 @@ def test_udf_registration_returns_udf(self):
             df.select(add_three("id").alias("plus_three")).collect()
         )
 
-    def test_wholefile_json(self):
+    def test_multiLine_json(self):
         people1 = self.spark.read.json("python/test_support/sql/people.json")
         people_array = self.spark.read.json("python/test_support/sql/people_array.json",
-                                            wholeFile=True)
+                                            multiLine=True)
         self.assertEqual(people1.collect(), people_array.collect())
 
-    def test_wholefile_csv(self):
+    def test_multiline_csv(self):
         ages_newlines = self.spark.read.csv(
-            "python/test_support/sql/ages_newlines.csv", wholeFile=True)
+            "python/test_support/sql/ages_newlines.csv", multiLine=True)
         expected = [Row(_c0=u'Joe', _c1=u'20', _c2=u'Hi,\nI am Jeo'),
                     Row(_c0=u'Tom', _c1=u'30', _c2=u'My name is Tom'),
                     Row(_c0=u'Hyukjin', _c1=u'25', _c2=u'I am Hyukjin\n\nI love Spark!')]

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/json/JSONOptions.scala

@@ -81,7 +81,7 @@ private[sql] class JSONOptions(
     FastDateFormat.getInstance(
       parameters.getOrElse("timestampFormat", "yyyy-MM-dd'T'HH:mm:ss.SSSXXX"), timeZone, Locale.US)
 
-  val wholeFile = parameters.get("wholeFile").map(_.toBoolean).getOrElse(false)
+  val multiLine = parameters.get("multiLine").map(_.toBoolean).getOrElse(false)
 
   /** Sets config options on a Jackson [[JsonFactory]]. */
   def setJacksonOptions(factory: JsonFactory): Unit = {

sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala

@@ -295,7 +295,7 @@ class DataFrameReader private[sql](sparkSession: SparkSession) extends Logging {
    * Loads JSON files and returns the results as a `DataFrame`.
    *
    * <a href="http://jsonlines.org/">JSON Lines</a> (newline-delimited JSON) is supported by
-   * default. For JSON (one record per file), set the `wholeFile` option to true.
+   * default. For JSON (one record per file), set the `multiLine` option to true.
    *
    * This function goes through the input once to determine the input schema. If you know the
    * schema in advance, use the version that specifies the schema to avoid the extra scan.
@@ -335,7 +335,7 @@ class DataFrameReader private[sql](sparkSession: SparkSession) extends Logging {
    * <li>`timestampFormat` (default `yyyy-MM-dd'T'HH:mm:ss.SSSXXX`): sets the string that
    * indicates a timestamp format. Custom date formats follow the formats at
    * `java.text.SimpleDateFormat`. This applies to timestamp type.</li>
-   * <li>`wholeFile` (default `false`): parse one record, which may span multiple lines,
+   * <li>`multiLine` (default `false`): parse one record, which may span multiple lines,
    * per file</li>
    * </ul>
    *
@@ -537,7 +537,7 @@ class DataFrameReader private[sql](sparkSession: SparkSession) extends Logging {
    * <li>`columnNameOfCorruptRecord` (default is the value specified in
    * `spark.sql.columnNameOfCorruptRecord`): allows renaming the new field having malformed string
    * created by `PERMISSIVE` mode. This overrides `spark.sql.columnNameOfCorruptRecord`.</li>
-   * <li>`wholeFile` (default `false`): parse one record, which may span multiple lines.</li>
+   * <li>`multiLine` (default `false`): parse one record, which may span multiple lines.</li>
    * </ul>
    * @since 2.0.0
    */

sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVDataSource.scala

@@ -111,8 +111,8 @@ abstract class CSVDataSource extends Serializable {
 
 object CSVDataSource {
   def apply(options: CSVOptions): CSVDataSource = {
-    if (options.wholeFile) {
-      WholeFileCSVDataSource
+    if (options.multiLine) {
+      MultiLineCSVDataSource
     } else {
       TextInputCSVDataSource
     }
@@ -197,7 +197,7 @@ object TextInputCSVDataSource extends CSVDataSource {
   }
 }
 
-object WholeFileCSVDataSource extends CSVDataSource {
+object MultiLineCSVDataSource extends CSVDataSource {
   override val isSplitable: Boolean = false
 
   override def readFile(

sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVOptions.scala

@@ -128,7 +128,7 @@ class CSVOptions(
     FastDateFormat.getInstance(
       parameters.getOrElse("timestampFormat", "yyyy-MM-dd'T'HH:mm:ss.SSSXXX"), timeZone, Locale.US)
 
-  val wholeFile = parameters.get("wholeFile").map(_.toBoolean).getOrElse(false)
+  val multiLine = parameters.get("multiLine").map(_.toBoolean).getOrElse(false)
 
   val maxColumns = getInt("maxColumns", 20480)
 

sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/json/JsonDataSource.scala

@@ -86,8 +86,8 @@ abstract class JsonDataSource extends Serializable {
 
 object JsonDataSource {
   def apply(options: JSONOptions): JsonDataSource = {
-    if (options.wholeFile) {
-      WholeFileJsonDataSource
+    if (options.multiLine) {
+      MultiLineJsonDataSource
     } else {
       TextInputJsonDataSource
     }
@@ -147,7 +147,7 @@ object TextInputJsonDataSource extends JsonDataSource {
   }
 }
 
-object WholeFileJsonDataSource extends JsonDataSource {
+object MultiLineJsonDataSource extends JsonDataSource {
   override val isSplitable: Boolean = {
     false
   }

sql/core/src/main/scala/org/apache/spark/sql/streaming/DataStreamReader.scala

@@ -163,7 +163,7 @@ final class DataStreamReader private[sql](sparkSession: SparkSession) extends Lo
    * Loads a JSON file stream and returns the results as a `DataFrame`.
    *
    * <a href="http://jsonlines.org/">JSON Lines</a> (newline-delimited JSON) is supported by
-   * default. For JSON (one record per file), set the `wholeFile` option to true.
+   * default. For JSON (one record per file), set the `multiLine` option to true.
    *
    * This function goes through the input once to determine the input schema. If you know the
    * schema in advance, use the version that specifies the schema to avoid the extra scan.
@@ -205,7 +205,7 @@ final class DataStreamReader private[sql](sparkSession: SparkSession) extends Lo
    * <li>`timestampFormat` (default `yyyy-MM-dd'T'HH:mm:ss.SSSXXX`): sets the string that
    * indicates a timestamp format. Custom date formats follow the formats at
    * `java.text.SimpleDateFormat`. This applies to timestamp type.</li>
-   * <li>`wholeFile` (default `false`): parse one record, which may span multiple lines,
+   * <li>`multiLine` (default `false`): parse one record, which may span multiple lines,
    * per file</li>
    * </ul>
    *
@@ -276,7 +276,7 @@ final class DataStreamReader private[sql](sparkSession: SparkSession) extends Lo
    * <li>`columnNameOfCorruptRecord` (default is the value specified in
    * `spark.sql.columnNameOfCorruptRecord`): allows renaming the new field having malformed string
    * created by `PERMISSIVE` mode. This overrides `spark.sql.columnNameOfCorruptRecord`.</li>
-   * <li>`wholeFile` (default `false`): parse one record, which may span multiple lines.</li>
+   * <li>`multiLine` (default `false`): parse one record, which may span multiple lines.</li>
    * </ul>
    *
    * @since 2.0.0