Revert "[SPARK-26248][SQL] Infer date type from CSV"
This reverts commit 5217f7b226
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parent
e408e05322
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db1c5b1839
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@ -22,20 +22,16 @@ import scala.util.control.Exception.allCatch
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import org.apache.spark.rdd.RDD
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import org.apache.spark.sql.catalyst.analysis.TypeCoercion
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import org.apache.spark.sql.catalyst.expressions.ExprUtils
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import org.apache.spark.sql.catalyst.util.{DateFormatter, TimestampFormatter}
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import org.apache.spark.sql.catalyst.util.TimestampFormatter
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import org.apache.spark.sql.types._
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class CSVInferSchema(val options: CSVOptions) extends Serializable {
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@transient
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private lazy val timestampFormatter = TimestampFormatter(
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private lazy val timestampParser = TimestampFormatter(
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options.timestampFormat,
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options.timeZone,
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options.locale)
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@transient
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private lazy val dateFormatter = DateFormatter(
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options.dateFormat,
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options.locale)
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private val decimalParser = {
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ExprUtils.getDecimalParser(options.locale)
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@ -108,7 +104,6 @@ class CSVInferSchema(val options: CSVOptions) extends Serializable {
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compatibleType(typeSoFar, tryParseDecimal(field)).getOrElse(StringType)
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case DoubleType => tryParseDouble(field)
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case TimestampType => tryParseTimestamp(field)
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case DateType => tryParseDate(field)
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case BooleanType => tryParseBoolean(field)
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case StringType => StringType
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case other: DataType =>
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@ -164,16 +159,9 @@ class CSVInferSchema(val options: CSVOptions) extends Serializable {
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}
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private def tryParseTimestamp(field: String): DataType = {
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if ((allCatch opt timestampFormatter.parse(field)).isDefined) {
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// This case infers a custom `dataFormat` is set.
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if ((allCatch opt timestampParser.parse(field)).isDefined) {
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TimestampType
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} else {
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tryParseDate(field)
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}
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}
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private def tryParseDate(field: String): DataType = {
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if ((allCatch opt dateFormatter.parse(field)).isDefined) {
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DateType
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} else {
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tryParseBoolean(field)
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}
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@ -187,22 +187,4 @@ class CSVInferSchemaSuite extends SparkFunSuite with SQLHelper {
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Seq("en-US", "ko-KR", "ru-RU", "de-DE").foreach(checkDecimalInfer(_, DecimalType(7, 0)))
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}
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test("inferring date type") {
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var options = new CSVOptions(Map("dateFormat" -> "yyyy/MM/dd"), false, "GMT")
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var inferSchema = new CSVInferSchema(options)
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assert(inferSchema.inferField(NullType, "2018/12/02") == DateType)
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options = new CSVOptions(Map("dateFormat" -> "MMM yyyy"), false, "GMT")
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inferSchema = new CSVInferSchema(options)
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assert(inferSchema.inferField(NullType, "Dec 2018") == DateType)
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options = new CSVOptions(
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Map("dateFormat" -> "yyyy-MM-dd", "timestampFormat" -> "yyyy-MM-dd'T'HH:mm:ss"),
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columnPruning = false,
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defaultTimeZoneId = "GMT")
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inferSchema = new CSVInferSchema(options)
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assert(inferSchema.inferField(NullType, "2018-12-03T11:00:00") == TimestampType)
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assert(inferSchema.inferField(NullType, "2018-12-03") == DateType)
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}
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}
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