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https://issues.apache.org/jira/browse/SPARK-18772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16007779#comment-16007779
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Hyukjin Kwon commented on SPARK-18772:
--------------------------------------

I am sorry for fixing the JIRA by myself - [~NathanHowell] as suggested in the 
PR. Please excuse me.

> Unnecessary conversion try and some missing cases for special floats in JSON
> ----------------------------------------------------------------------------
>
>                 Key: SPARK-18772
>                 URL: https://issues.apache.org/jira/browse/SPARK-18772
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.0.2
>            Reporter: Nathan Howell
>            Priority: Minor
>
> It looks we can avoid some cases for unnecessary conversion try in special 
> floats in JSON.
> Also, we could support some other cases for them such as {{+INF}}, {{INF}} 
> and {{-INF}}.
> For avoiding additional conversions, please refer the codes below:
> {code}
> scala> import org.apache.spark.sql.types._
> import org.apache.spark.sql.types._
> scala> spark.read.schema(StructType(Seq(StructField("a", 
> DoubleType)))).option("mode", "FAILFAST").json(Seq("""{"a": 
> "nan"}""").toDS).show()
> 17/05/12 11:30:41 ERROR Executor: Exception in task 0.0 in stage 2.0 (TID 2)
> java.lang.NumberFormatException: For input string: "nan"
> ...
> {code}



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