{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/67991258","id":67991258,"diff_hunk":"@@ -462,4 +463,27 @@ class OrcQuerySuite extends QueryTest with BeforeAndAfterAll with OrcTest {\n       }\n     }\n   }\n+\n+  test(\"column nullability and comment - write and then read\") {\n+    val schema = StructType(\n+      StructField(\"cl1\", IntegerType, nullable = false,\n+        new MetadataBuilder().putString(\"comment\", \"test\").build()) ::","path":"sql/hive/src/test/scala/org/apache/spark/sql/hive/orc/OrcQuerySuite.scala","position":16,"original_position":16,"commit_id":"99401850626313f65e1b232dc777b959bb8f21bf","original_commit_id":"99401850626313f65e1b232dc777b959bb8f21bf","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":"hmmm, is this the official way to add column comment when create table using `DataFrameWriter`?\r\n\r\ncc @yhuai  @hvanhovell ","created_at":"2016-06-22T03:56:08Z","updated_at":"2016-06-22T03:56:08Z","html_url":"https://github.com/apache/spark/pull/13764#discussion_r67991258","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/13764","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/67991258"},"html":{"href":"https://github.com/apache/spark/pull/13764#discussion_r67991258"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/13764"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/13764","id":74350764,"html_url":"https://github.com/apache/spark/pull/13764","diff_url":"https://github.com/apache/spark/pull/13764.diff","patch_url":"https://github.com/apache/spark/pull/13764.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/13764","number":13764,"state":"open","locked":false,"title":"[SPARK-16024] [SQL] [TEST] Verify Column Comment for Data Source Tables","user":{"login":"gatorsmile","id":11567269,"avatar_url":"https://avatars.githubusercontent.com/u/11567269?v=3","gravatar_id":"","url":"https://api.github.com/users/gatorsmile","html_url":"https://github.com/gatorsmile","followers_url":"https://api.github.com/users/gatorsmile/followers","following_url":"https://api.github.com/users/gatorsmile/following{/other_user}","gists_url":"https://api.github.com/users/gatorsmile/gists{/gist_id}","starred_url":"https://api.github.com/users/gatorsmile/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gatorsmile/subscriptions","organizations_url":"https://api.github.com/users/gatorsmile/orgs","repos_url":"https://api.github.com/users/gatorsmile/repos","events_url":"https://api.github.com/users/gatorsmile/events{/privacy}","received_events_url":"https://api.github.com/users/gatorsmile/received_events","type":"User","site_admin":false},"body":"#### What changes were proposed in this pull request?\r\nThis PR is to improve test coverage. It verifies whether `Comment` of `Column` can be appropriate handled. \r\n\r\nThe test cases verify the related parts in Parser, both SQL and DataFrameWriter interface, and both Hive Metastore catalog and In-memory catalog.\r\n\r\n#### How was this patch tested?\r\nN/A","created_at":"2016-06-19T00:06:24Z","updated_at":"2016-06-22T03:56:08Z","closed_at":null,"merged_at":null,"merge_commit_sha":"354023385e746ad4b8e5a0a53d7595baf13c5c52","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/13764/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/13764/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/13764/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/99401850626313f65e1b232dc777b959bb8f21bf","head":{"label":"gatorsmile:dataSourceComment","ref":"dataSourceComment","sha":"99401850626313f65e1b232dc777b959bb8f21bf","user":{"login":"gatorsmile","id":11567269,"avatar_url":"https://avatars.githubusercontent.com/u/11567269?v=3","gravatar_id":"","url":"https://api.github.com/users/gatorsmile","html_url":"https://github.com/gatorsmile","followers_url":"https://api.github.com/users/gatorsmile/followers","following_url":"https://api.github.com/users/gatorsmile/following{/other_user}","gists_url":"https://api.github.com/users/gatorsmile/gists{/gist_id}","starred_url":"https://api.github.com/users/gatorsmile/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gatorsmile/subscriptions","organizations_url":"https://api.github.com/users/gatorsmile/orgs","repos_url":"https://api.github.com/users/gatorsmile/repos","events_url":"https://api.github.com/users/gatorsmile/events{/privacy}","received_events_url":"https://api.github.com/users/gatorsmile/received_events","type":"User","site_admin":false},"repo":{"id":44710950,"name":"spark","full_name":"gatorsmile/spark","owner":{"login":"gatorsmile","id":11567269,"avatar_url":"https://avatars.githubusercontent.com/u/11567269?v=3","gravatar_id":"","url":"https://api.github.com/users/gatorsmile","html_url":"https://github.com/gatorsmile","followers_url":"https://api.github.com/users/gatorsmile/followers","following_url":"https://api.github.com/users/gatorsmile/following{/other_user}","gists_url":"https://api.github.com/users/gatorsmile/gists{/gist_id}","starred_url":"https://api.github.com/users/gatorsmile/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gatorsmile/subscriptions","organizations_url":"https://api.github.com/users/gatorsmile/orgs","repos_url":"https://api.github.com/users/gatorsmile/repos","events_url":"https://api.github.com/users/gatorsmile/events{/privacy}","received_events_url":"https://api.github.com/users/gatorsmile/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/gatorsmile/spark","description":"Mirror 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