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[SPARK-19005][SQL] Keep column ordering when a schema is explicitly specified #16410

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[SPARK-19005][SQL] Keep column ordering when a schema is explicitly specified #16410

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a6d734f
Keep column ordering when a schema is explicitly specified
maropu Dec 23, 2016
876be76
Fix the test failures
maropu Dec 27, 2016
4356aac
Revert "Fix the test failures"
maropu Jan 12, 2017
d82791f
Revert "Keep column ordering when a schema is explicitly specified"
maropu Jan 12, 2017
e3e095a
Add a test
maropu Jan 12, 2017
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11 changes: 11 additions & 0 deletions ...a/org/apache/spark/sql/execution/datasources/parquet/ParquetPartitionDiscoverySuite.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -983,4 +983,15 @@ class ParquetPartitionDiscoverySuite extends QueryTest with ParquetTest with Sha
}
}
}

test("SPARK-19005 Keep column ordering when a schema is explicitly specified") {
withTempPath { dir =>
val path = dir.getCanonicalPath
val df = Seq((1L, 2.0)).toDF("a", "b")
df.write.parquet(s"$path/a=1")
val schema = new StructType().add("a", LongType).add("b", DoubleType)
assert(spark.read.schema(schema).parquet(path).schema ===
StructType(StructField("a", LongType) :: StructField("b", DoubleType) :: Nil))
}
}
}