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https://issues.apache.org/jira/browse/SPARK-19375?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davies Liu closed SPARK-19375.
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Resolution: Duplicate
> na.fill() should not change the data type of column
> ---------------------------------------------------
>
> Key: SPARK-19375
> URL: https://issues.apache.org/jira/browse/SPARK-19375
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.3.1, 1.4.1, 1.5.2, 1.6.3, 2.0.2, 2.1.0, 2.2.0
> Reporter: Davies Liu
>
> When these function are called, a column of numeric type will be converted
> into DoubleType, which will cause unexpected type casting and also precision
> loss for LongType.
> {code}
> def fill(value: Double)
> def fill(value: Double, cols: Array[String])
> def fill(value: Double, cols: Seq[String])
> {code}
> Workaround
> {code}
> fill(Map("name" -> v))
> {code}
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