Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/14883#discussion_r77113302
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/ExternalCatalog.scala
---
@@ -184,4 +184,9 @@ abstract class ExternalCatalog {
def listFunctions(db: String, pattern: String): Seq[String]
+ //
--------------------------------------------------------------------------
+ // Resources
+ //
--------------------------------------------------------------------------
+
+ def addJar(path: String): Unit
--- End diff --
Add a resource to the underlying Hive metastore for DDL operations
For example, if we do not use HiveClient to pass the `ADD JAR` command to
Hive metastore, we are unable to create the table. Thus, it sounds fine to put
`addJar` into `ExternalCatalog`.
```Scala
val testJar =
TestHive.getHiveFile("hive-hcatalog-core-0.13.1.jar").getCanonicalPath
sql(s"ADD JAR $testJar")
sql(
"""
|CREATE TABLE t1(a string, b string)
|ROW FORMAT SERDE 'org.apache.hive.hcatalog.data.JsonSerDe'
""".stripMargin)
```
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