Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16733#discussion_r99202768
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCSuite.scala
---
@@ -726,11 +726,14 @@ class JDBCSuite extends SparkFunSuite
test("OracleDialect jdbc type mapping") {
val oracleDialect = JdbcDialects.get("jdbc:oracle")
- val metadata = new MetadataBuilder().putString("name",
"test_column").putLong("scale", -127)
- assert(oracleDialect.getCatalystType(java.sql.Types.NUMERIC, "float",
1, metadata) ==
- Some(DecimalType(DecimalType.MAX_PRECISION, 10)))
assert(oracleDialect.getCatalystType(java.sql.Types.NUMERIC,
"numeric", 0, null) ==
Some(DecimalType(DecimalType.MAX_PRECISION, 10)))
+ val metadata1 = new MetadataBuilder()
--- End diff --
Could you explain the scenario that could build an empty metadata and pass
it to `getCatalystType`?
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