Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/2983#discussion_r19697295
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/parquet/ParquetQuerySuite.scala ---
@@ -869,4 +871,35 @@ class ParquetQuerySuite extends QueryTest with
FunSuiteLike with BeforeAndAfterA
assert(a.dataType === b.dataType)
}
}
+
+ test("read/write fixed-length decimals") {
+ for ((precision, scale) <- Seq((5, 2), (1, 0), (1, 1), (18, 10), (18,
17))) {
+ val tempDir = getTempFilePath("parquetTest").getCanonicalPath
+ val data = sparkContext.parallelize(0 to 1000)
+ .map(i => NumericData(i, i / 100.0))
+ .select('i, 'd cast DecimalType(precision, scale))
+ data.saveAsParquetFile(tempDir)
+ checkAnswer(parquetFile(tempDir), data.toSchemaRDD.collect().toSeq)
+ }
+
+ // Decimals with precision above 18 are not yet supported
--- End diff --
If we don't do this in this PR then we might want to open a JIRA so someone
else does.
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