{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/59125014","id":59125014,"diff_hunk":"@@ -269,6 +270,8 @@ class LDA private (\n    */\n   @Since(\"1.3.0\")\n   def setCheckpointInterval(checkpointInterval: Int): this.type = {\n+    require(checkpointInterval == -1 || checkpointInterval > 0,","path":"mllib/src/main/scala/org/apache/spark/mllib/clustering/LDA.scala","position":14,"original_position":14,"commit_id":"45b61a55feb52cce86e3eb69d91b6903bbd87acf","original_commit_id":"45b61a55feb52cce86e3eb69d91b6903bbd87acf","user":{"login":"zhengruifeng","id":7322292,"avatar_url":"https://avatars.githubusercontent.com/u/7322292?v=3","gravatar_id":"","url":"https://api.github.com/users/zhengruifeng","html_url":"https://github.com/zhengruifeng","followers_url":"https://api.github.com/users/zhengruifeng/followers","following_url":"https://api.github.com/users/zhengruifeng/following{/other_user}","gists_url":"https://api.github.com/users/zhengruifeng/gists{/gist_id}","starred_url":"https://api.github.com/users/zhengruifeng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zhengruifeng/subscriptions","organizations_url":"https://api.github.com/users/zhengruifeng/orgs","repos_url":"https://api.github.com/users/zhengruifeng/repos","events_url":"https://api.github.com/users/zhengruifeng/events{/privacy}","received_events_url":"https://api.github.com/users/zhengruifeng/received_events","type":"User","site_admin":false},"body":"The is no document direct for -1.\r\nI add -1 according to @yanboliang 's comments.","created_at":"2016-04-10T01:27:46Z","updated_at":"2016-04-10T01:27:46Z","html_url":"https://github.com/apache/spark/pull/12062#discussion_r59125014","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/12062","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/59125014"},"html":{"href":"https://github.com/apache/spark/pull/12062#discussion_r59125014"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/12062"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/12062","id":64609076,"html_url":"https://github.com/apache/spark/pull/12062","diff_url":"https://github.com/apache/spark/pull/12062.diff","patch_url":"https://github.com/apache/spark/pull/12062.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/12062","number":12062,"state":"open","locked":false,"title":"[Minor][MLLIB] Add args-checking for LDA and StreamingKMeans","user":{"login":"zhengruifeng","id":7322292,"avatar_url":"https://avatars.githubusercontent.com/u/7322292?v=3","gravatar_id":"","url":"https://api.github.com/users/zhengruifeng","html_url":"https://github.com/zhengruifeng","followers_url":"https://api.github.com/users/zhengruifeng/followers","following_url":"https://api.github.com/users/zhengruifeng/following{/other_user}","gists_url":"https://api.github.com/users/zhengruifeng/gists{/gist_id}","starred_url":"https://api.github.com/users/zhengruifeng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zhengruifeng/subscriptions","organizations_url":"https://api.github.com/users/zhengruifeng/orgs","repos_url":"https://api.github.com/users/zhengruifeng/repos","events_url":"https://api.github.com/users/zhengruifeng/events{/privacy}","received_events_url":"https://api.github.com/users/zhengruifeng/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\nadd the checking for LDA and StreamingKMeans\r\n\r\n\r\n## How was this patch tested?\r\nmanual tests\r\n\r\n","created_at":"2016-03-30T11:07:35Z","updated_at":"2016-04-10T01:27:46Z","closed_at":null,"merged_at":null,"merge_commit_sha":"9a71d8e0b181bedbd56c1918ac29e2f8e95a5a69","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/12062/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/12062/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/12062/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/45b61a55feb52cce86e3eb69d91b6903bbd87acf","head":{"label":"zhengruifeng:initmodel","ref":"initmodel","sha":"45b61a55feb52cce86e3eb69d91b6903bbd87acf","user":{"login":"zhengruifeng","id":7322292,"avatar_url":"https://avatars.githubusercontent.com/u/7322292?v=3","gravatar_id":"","url":"https://api.github.com/users/zhengruifeng","html_url":"https://github.com/zhengruifeng","followers_url":"https://api.github.com/users/zhengruifeng/followers","following_url":"https://api.github.com/users/zhengruifeng/following{/other_user}","gists_url":"https://api.github.com/users/zhengruifeng/gists{/gist_id}","starred_url":"https://api.github.com/users/zhengruifeng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zhengruifeng/subscriptions","organizations_url":"https://api.github.com/users/zhengruifeng/orgs","repos_url":"https://api.github.com/users/zhengruifeng/repos","events_url":"https://api.github.com/users/zhengruifeng/events{/privacy}","received_events_url":"https://api.github.com/users/zhengruifeng/received_events","type":"User","site_admin":false},"repo":{"id":51584791,"name":"spark","full_name":"zhengruifeng/spark","owner":{"login":"zhengruifeng","id":7322292,"avatar_url":"https://avatars.githubusercontent.com/u/7322292?v=3","gravatar_id":"","url":"https://api.github.com/users/zhengruifeng","html_url":"https://github.com/zhengruifeng","followers_url":"https://api.github.com/users/zhengruifeng/followers","following_url":"https://api.github.com/users/zhengruifeng/following{/other_user}","gists_url":"https://api.github.com/users/zhengruifeng/gists{/gist_id}","starred_url":"https://api.github.com/users/zhengruifeng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zhengruifeng/subscriptions","organizations_url":"https://api.github.com/users/zhengruifeng/orgs","repos_url":"https://api.github.com/users/zhengruifeng/repos","events_url":"https://api.github.com/users/zhengruifeng/events{/privacy}","received_events_url":"https://api.github.com/users/zhengruifeng/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/zhengruifeng/spark","description":"Mirror 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