Rene Treffer created SPARK-8342:
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Summary: Decimal Math beyond ~2^112 is broken
Key: SPARK-8342
URL: https://issues.apache.org/jira/browse/SPARK-8342
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.5.0
Reporter: Rene Treffer
Here is a snippet from the spark-shell that should not happen
{code}
scala> val d = Decimal(Long.MaxValue,100,0) * Decimal(Long.MaxValue,100,0)
d: org.apache.spark.sql.types.Decimal = 0
scala> d.toDebugString
res3: String = Decimal(expanded,0,1,0})
{code}
It looks like precision gets reseted on some operations and values are then
truncated.
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