{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/61971480","id":61971480,"diff_hunk":"@@ -148,9 +148,17 @@ class SessionCatalog(\n     currentDb = db\n   }\n \n-  def getDefaultDBPath(db: String): String = {\n+  /** Get the path for creating a non-default database. */\n+  def createDatabasePath(db: String, path: Option[String]): String = {\n     val database = if (conf.caseSensitiveAnalysis) db else db.toLowerCase\n-    new Path(new Path(conf.warehousePath), database + \".db\").toString\n+    val dbPath = path.map(new Path(_)).getOrElse {\n+      val defaultPath = conf.warehousePath\n+      if (org.apache.commons.lang.StringUtils.isBlank(defaultPath)) {\n+        throw new AnalysisException(\"spark.sql.warehouse.dir is blank\")\n+      }\n+      new Path(new Path(defaultPath), database + \".db\")\n+    }\n+    dbPath.toString.stripSuffix(File.separator)","path":"sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala","position":16,"original_position":16,"commit_id":"95d9a00d0679b932bc6e2478b49c6f8b189054f5","original_commit_id":"95d9a00d0679b932bc6e2478b49c6f8b189054f5","user":{"login":"andrewor14","id":2133137,"avatar_url":"https://avatars.githubusercontent.com/u/2133137?v=3","gravatar_id":"","url":"https://api.github.com/users/andrewor14","html_url":"https://github.com/andrewor14","followers_url":"https://api.github.com/users/andrewor14/followers","following_url":"https://api.github.com/users/andrewor14/following{/other_user}","gists_url":"https://api.github.com/users/andrewor14/gists{/gist_id}","starred_url":"https://api.github.com/users/andrewor14/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/andrewor14/subscriptions","organizations_url":"https://api.github.com/users/andrewor14/orgs","repos_url":"https://api.github.com/users/andrewor14/repos","events_url":"https://api.github.com/users/andrewor14/events{/privacy}","received_events_url":"https://api.github.com/users/andrewor14/received_events","type":"User","site_admin":false},"body":"similarly I don't understand why we need to do this. What is the exception you see if we didn't strip the slash?","created_at":"2016-05-03T23:07:15Z","updated_at":"2016-05-03T23:07:15Z","html_url":"https://github.com/apache/spark/pull/12081#discussion_r61971480","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/12081","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/61971480"},"html":{"href":"https://github.com/apache/spark/pull/12081#discussion_r61971480"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/12081"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/12081","id":64743242,"html_url":"https://github.com/apache/spark/pull/12081","diff_url":"https://github.com/apache/spark/pull/12081.diff","patch_url":"https://github.com/apache/spark/pull/12081.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/12081","number":12081,"state":"open","locked":false,"title":"[SPARK-14124] [SQL] [FOLLOWUP] Implement Database-related DDL Commands ","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\n\r\nFirst, this PR will issue an exception when location is not specified and `spark.sql.warehouse.dir` is blank.\r\n\r\nSecond, the property value of `java.io.tmpdir` does not include a trailing slash on some platform. Hive always removes the last trailing slash. For example, what I got in the web:\r\n```\r\nWin NT  --> C:\\TEMP\\\r\nWin XP  --> C:\\TEMP\r\nSolaris --> /var/tmp/\r\nLinux   --> /var/tmp\r\n```\r\n\r\nThird, a couple of test cases are added to verify if the commands work properly.\r\n\r\ncc @yhuai @andrewor14 Sorry, I did not catch this issue when submitting the PR. Could you review this follow-up?\r\n\r\n#### How was this patch tested?\r\nAdded a test case for it and correct the previous test 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