{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/92294218","pull_request_review_id":12807170,"id":92294218,"diff_hunk":"@@ -102,7 +102,7 @@ trait ProgressReporter extends Logging {\n \n   /** Returns the most recent query progress update. */","path":"sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/ProgressReporter.scala","position":2,"original_position":2,"commit_id":"f6312d265377569193dea184e2b4e82f4de374b2","original_commit_id":"f6312d265377569193dea184e2b4e82f4de374b2","user":{"login":"brkyvz","id":5243515,"avatar_url":"https://avatars.githubusercontent.com/u/5243515?v=3","gravatar_id":"","url":"https://api.github.com/users/brkyvz","html_url":"https://github.com/brkyvz","followers_url":"https://api.github.com/users/brkyvz/followers","following_url":"https://api.github.com/users/brkyvz/following{/other_user}","gists_url":"https://api.github.com/users/brkyvz/gists{/gist_id}","starred_url":"https://api.github.com/users/brkyvz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/brkyvz/subscriptions","organizations_url":"https://api.github.com/users/brkyvz/orgs","repos_url":"https://api.github.com/users/brkyvz/repos","events_url":"https://api.github.com/users/brkyvz/events{/privacy}","received_events_url":"https://api.github.com/users/brkyvz/received_events","type":"User","site_admin":false},"body":"Maybe add `returns null if there were no progress updates`","created_at":"2016-12-13T23:50:33Z","updated_at":"2016-12-13T23:50:33Z","html_url":"https://github.com/apache/spark/pull/16273#discussion_r92294218","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/16273","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/92294218"},"html":{"href":"https://github.com/apache/spark/pull/16273#discussion_r92294218"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/16273"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/16273","id":97850426,"html_url":"https://github.com/apache/spark/pull/16273","diff_url":"https://github.com/apache/spark/pull/16273.diff","patch_url":"https://github.com/apache/spark/pull/16273.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/16273","number":16273,"state":"open","locked":false,"title":"[SPARK-18852][SS]StreamingQuery.lastProgress should be null when recentProgress is empty","user":{"login":"zsxwing","id":1000778,"avatar_url":"https://avatars.githubusercontent.com/u/1000778?v=3","gravatar_id":"","url":"https://api.github.com/users/zsxwing","html_url":"https://github.com/zsxwing","followers_url":"https://api.github.com/users/zsxwing/followers","following_url":"https://api.github.com/users/zsxwing/following{/other_user}","gists_url":"https://api.github.com/users/zsxwing/gists{/gist_id}","starred_url":"https://api.github.com/users/zsxwing/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zsxwing/subscriptions","organizations_url":"https://api.github.com/users/zsxwing/orgs","repos_url":"https://api.github.com/users/zsxwing/repos","events_url":"https://api.github.com/users/zsxwing/events{/privacy}","received_events_url":"https://api.github.com/users/zsxwing/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\n\r\nRight now `StreamingQuery.lastProgress` throws NoSuchElementException and it's hard to be used in Python since Python user will just see Py4jError.\r\n\r\nThis PR just makes it return null instead.\r\n\r\n## How was this patch tested?\r\n\r\n`test(\"lastProgress should be null when recentProgress is empty\")`\r\n\r\n","created_at":"2016-12-13T22:36:49Z","updated_at":"2016-12-13T23:50:33Z","closed_at":null,"merged_at":null,"merge_commit_sha":"54174f87c707d805c3e74f459dc859af6a73ab67","assignee":null,"assignees":[],"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/16273/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/16273/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/16273/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/f6312d265377569193dea184e2b4e82f4de374b2","head":{"label":"zsxwing:SPARK-18852","ref":"SPARK-18852","sha":"f6312d265377569193dea184e2b4e82f4de374b2","user":{"login":"zsxwing","id":1000778,"avatar_url":"https://avatars.githubusercontent.com/u/1000778?v=3","gravatar_id":"","url":"https://api.github.com/users/zsxwing","html_url":"https://github.com/zsxwing","followers_url":"https://api.github.com/users/zsxwing/followers","following_url":"https://api.github.com/users/zsxwing/following{/other_user}","gists_url":"https://api.github.com/users/zsxwing/gists{/gist_id}","starred_url":"https://api.github.com/users/zsxwing/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zsxwing/subscriptions","organizations_url":"https://api.github.com/users/zsxwing/orgs","repos_url":"https://api.github.com/users/zsxwing/repos","events_url":"https://api.github.com/users/zsxwing/events{/privacy}","received_events_url":"https://api.github.com/users/zsxwing/received_events","type":"User","site_admin":false},"repo":{"id":17894272,"name":"spark","full_name":"zsxwing/spark","owner":{"login":"zsxwing","id":1000778,"avatar_url":"https://avatars.githubusercontent.com/u/1000778?v=3","gravatar_id":"","url":"https://api.github.com/users/zsxwing","html_url":"https://github.com/zsxwing","followers_url":"https://api.github.com/users/zsxwing/followers","following_url":"https://api.github.com/users/zsxwing/following{/other_user}","gists_url":"https://api.github.com/users/zsxwing/gists{/gist_id}","starred_url":"https://api.github.com/users/zsxwing/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zsxwing/subscriptions","organizations_url":"https://api.github.com/users/zsxwing/orgs","repos_url":"https://api.github.com/users/zsxwing/repos","events_url":"https://api.github.com/users/zsxwing/events{/privacy}","received_events_url":"https://api.github.com/users/zsxwing/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/zsxwing/spark","description":"Mirror 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