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From davies <>
Subject [GitHub] spark pull request: [SPARK-4336] [SQL] support type auto detection...
Date Tue, 11 Nov 2014 07:43:19 GMT
Github user davies commented on a diff in the pull request:
    --- Diff: sql/core/src/main/scala/org/apache/spark/sql/types/util/DataTypeConversions.scala
    @@ -131,6 +131,19 @@ protected[sql] object DataTypeConversions {
    +  def guessTypeFromString(s:String): DataType = {
    +    try {
    +      val res = stringToTime(s)
    --- End diff --
    This function will be called against every string in json, so it should be very fast.
It should fail fast in most cases if the s is not a time, the path in catch is extremely slow,
see [1].

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