{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/62416962","id":62416962,"diff_hunk":"@@ -59,17 +59,48 @@ class InMemoryCatalog extends ExternalCatalog {\n     }\n   }\n \n+  private def requireFunctionNotFound(db: String, funcName: String): Unit = {\n+    if (functionExists(db, funcName)) {\n+      throw new AnalysisException(\n+        s\"Function already exists: '$funcName' exists in database '$db'\")\n+    }\n+  }\n+\n   private def requireTableExists(db: String, table: String): Unit = {\n     if (!tableExists(db, table)) {\n       throw new AnalysisException(\n         s\"Table or view not found: '$table' does not exist in database '$db'\")\n     }\n   }\n \n-  private def requirePartitionExists(db: String, table: String, spec: TablePartitionSpec): Unit = {\n-    if (!partitionExists(db, table, spec)) {\n+  private def requireTableNotFound(db: String, table: String): Unit = {\n+    if (tableExists(db, table)) {\n       throw new AnalysisException(\n-        s\"Partition not found: database '$db' table '$table' does not contain: '$spec'\")\n+        s\"Table or view exists: '$table' exists in database '$db'\")\n+    }\n+  }\n+\n+  private def requirePartitionExists(","path":"sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/InMemoryCatalog.scala","position":28,"original_position":28,"commit_id":"8dc9be15373f68e3c2c00aee06ebad46f493da7b","original_commit_id":"8dc9be15373f68e3c2c00aee06ebad46f493da7b","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":"Change it now. Thanks!","created_at":"2016-05-07T14:25:49Z","updated_at":"2016-05-07T14:25:49Z","html_url":"https://github.com/apache/spark/pull/12960#discussion_r62416962","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/12960","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/62416962"},"html":{"href":"https://github.com/apache/spark/pull/12960#discussion_r62416962"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/12960"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/12960","id":69188601,"html_url":"https://github.com/apache/spark/pull/12960","diff_url":"https://github.com/apache/spark/pull/12960.diff","patch_url":"https://github.com/apache/spark/pull/12960.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/12960","number":12960,"state":"open","locked":false,"title":"[SPARK-15185] [SQL] InMemoryCatalog: Silent Removal of an Existent Table/Function/Partitions by Rename ","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\nSo far, in the implementation of InMemoryCatalog, we do not check if the new/destination table/function/partition exists or not. Thus, we just silently remove the existent table/function/partition. \r\n\r\nThis PR is to detect them and issue an appropriate exception. \r\n\r\n#### How was this patch tested?\r\nAdded the related test cases. They also verify if HiveExternalCatalog also detects these errors.","created_at":"2016-05-06T18:10:40Z","updated_at":"2016-05-07T14:25:49Z","closed_at":null,"merged_at":null,"merge_commit_sha":"1224759e088c3615ce616992594bdd12846c4f90","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/12960/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/12960/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/12960/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/8dc9be15373f68e3c2c00aee06ebad46f493da7b","head":{"label":"gatorsmile:renameInMemoryCatalog","ref":"renameInMemoryCatalog","sha":"8dc9be15373f68e3c2c00aee06ebad46f493da7b","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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