{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/47632111","id":47632111,"diff_hunk":"@@ -499,10 +499,16 @@ class DataFrame private[sql](\n     // Analyze the self join. The assumption is that the analyzer will disambiguate left vs right\n     // by creating a new instance for one of the branch.\n     val joined = sqlContext.executePlan(\n-      Join(logicalPlan, right.logicalPlan, joinType = Inner, None)).analyzed.asInstanceOf[Join]\n+      Join(logicalPlan, right.logicalPlan, joinType = JoinType(joinType), None)\n+    ).analyzed.asInstanceOf[Join]\n \n     // Project only one of the join columns.\n-    val joinedCols = usingColumns.map(col => withPlan(joined.right).resolve(col))\n+    //\n+    // SPARK-12336: For outer joins, attributes of at least one child plan output will be forced to\n+    // be nullable. An `AttributeSet` is necessary so that we are not affected by different\n+    // nullability values.\n+    val joinedCols = AttributeSet(usingColumns.map(col => withPlan(joined.right).resolve(col)))","path":"sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala","position":14,"original_position":14,"commit_id":"f9638b758309b71a5ec1367aa91288976a48213b","original_commit_id":"1d6701662d3fd02ad98c59a4fcd1f529d2722aaa","user":{"login":"cloud-fan","id":3182036,"avatar_url":"https://avatars.githubusercontent.com/u/3182036?v=3","gravatar_id":"","url":"https://api.github.com/users/cloud-fan","html_url":"https://github.com/cloud-fan","followers_url":"https://api.github.com/users/cloud-fan/followers","following_url":"https://api.github.com/users/cloud-fan/following{/other_user}","gists_url":"https://api.github.com/users/cloud-fan/gists{/gist_id}","starred_url":"https://api.github.com/users/cloud-fan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cloud-fan/subscriptions","organizations_url":"https://api.github.com/users/cloud-fan/orgs","repos_url":"https://api.github.com/users/cloud-fan/repos","events_url":"https://api.github.com/users/cloud-fan/events{/privacy}","received_events_url":"https://api.github.com/users/cloud-fan/received_events","type":"User","site_admin":false},"body":"should we rename this to `joinedColsFromRight`?","created_at":"2015-12-15T12:58:12Z","updated_at":"2015-12-15T12:58:12Z","html_url":"https://github.com/apache/spark/pull/10296#discussion_r47632111","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/10296","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/47632111"},"html":{"href":"https://github.com/apache/spark/pull/10296#discussion_r47632111"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/10296"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/10296","id":53598022,"html_url":"https://github.com/apache/spark/pull/10296","diff_url":"https://github.com/apache/spark/pull/10296.diff","patch_url":"https://github.com/apache/spark/pull/10296.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/10296","number":10296,"state":"open","locked":false,"title":"[SPARK-12323][SPARK-12335][SPARK-12336][SQL] Makes BoundReference respect nullability","user":{"login":"liancheng","id":230655,"avatar_url":"https://avatars.githubusercontent.com/u/230655?v=3","gravatar_id":"","url":"https://api.github.com/users/liancheng","html_url":"https://github.com/liancheng","followers_url":"https://api.github.com/users/liancheng/followers","following_url":"https://api.github.com/users/liancheng/following{/other_user}","gists_url":"https://api.github.com/users/liancheng/gists{/gist_id}","starred_url":"https://api.github.com/users/liancheng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/liancheng/subscriptions","organizations_url":"https://api.github.com/users/liancheng/orgs","repos_url":"https://api.github.com/users/liancheng/repos","events_url":"https://api.github.com/users/liancheng/events{/privacy}","received_events_url":"https://api.github.com/users/liancheng/received_events","type":"User","site_admin":false},"body":"This PR partially fixes SPARK-12323 by making `BoundReference` respect nullability. Now if a \"top-level\" column is defined as non-nullable, nulls appear in input data will cause a runtime exception with nice error message.\r\n\r\nTwo other existing nullability bugs ([SPARK-12335][1], [SPARK-12336][2]) are also discovered by this change and fixed in this PR.\r\n\r\nWhat this PR doesn't fix is cases of non-nullable nested fields, which are covered in the 3 newly added ignored test cases. These test cases fail because `NewInstance`, `MakeObjects`, and potentially some other expressions along the way are always nullable. To fix these test cases, these expressions must also respect nullability. Would like to fix them in a follow-up PR.\r\n\r\n[1]: https://issues.apache.org/jira/browse/SPARK-12335\r\n[2]: 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