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https://issues.apache.org/jira/browse/SPARK-8802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14652733#comment-14652733
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Reynold Xin commented on SPARK-8802:
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[~joshrosen] is this still a problem given the other decimal work?
> Decimal.apply(BigDecimal).toBigDecimal may throw NumberFormatException
> ----------------------------------------------------------------------
>
> Key: SPARK-8802
> URL: https://issues.apache.org/jira/browse/SPARK-8802
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Josh Rosen
> Assignee: Josh Rosen
> Priority: Minor
>
> There exist certain BigDecimals that can be converted into Spark SQL's
> Decimal class but which produce Decimals that cannot be converted back to
> BigDecimal without throwing NumberFormatException.
> For instance:
> {code}
> val x = BigDecimal(BigInt("18889465931478580854784"), -2147483648)
> assert(Decimal(x).toBigDecimal === x)
> {code}
> will fail with an exception:
> {code}
> java.lang.NumberFormatException
> at java.math.BigDecimal.<init>(BigDecimal.java:511)
> at java.math.BigDecimal.<init>(BigDecimal.java:757)
> at scala.math.BigDecimal$.apply(BigDecimal.scala:119)
> at scala.math.BigDecimal.apply(BigDecimal.scala:324)
> at org.apache.spark.sql.types.Decimal.toBigDecimal(Decimal.scala:142)
> at
> org.apache.spark.sql.types.decimal.DecimalSuite$$anonfun$2.apply$mcV$sp(DecimalSuite.scala:62)
> at
> org.apache.spark.sql.types.decimal.DecimalSuite$$anonfun$2.apply(DecimalSuite.scala:60)
> at
> org.apache.spark.sql.types.decimal.DecimalSuite$$anonfun$2.apply(DecimalSuite.scala:60)
> {code}
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