Liang-Chi Hsieh created SPARK-8677:
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Summary: Decimal divide operation throws ArithmeticException
Key: SPARK-8677
URL: https://issues.apache.org/jira/browse/SPARK-8677
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: Liang-Chi Hsieh
Please refer to [BigDecimal
doc|http://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigDecimal.html]
{quote}
... the rounding mode setting of a MathContext object with a precision setting
of 0 is not used and thus irrelevant. In the case of divide, the exact quotient
could have an infinitely long decimal expansion; for example, 1 divided by 3.
{quote}
Because we provide a MathContext.UNLIMITED in toBigDecimal, Decimal divide
operation will throw the following exception:
{code}
val decimal = Decimal(1.0, 10, 3) / Decimal(3.0, 10, 3)
[info] java.lang.ArithmeticException: Non-terminating decimal expansion; no
exact representable decimal result.
[info] at java.math.BigDecimal.divide(BigDecimal.java:1690)
[info] at java.math.BigDecimal.divide(BigDecimal.java:1723)
[info] at scala.math.BigDecimal.$div(BigDecimal.scala:256)
[info] at org.apache.spark.sql.types.Decimal.$div(Decimal.scala:272)
{code}
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