{"action":"closed","number":15820,"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/15820","id":92890706,"html_url":"https://github.com/apache/spark/pull/15820","diff_url":"https://github.com/apache/spark/pull/15820.diff","patch_url":"https://github.com/apache/spark/pull/15820.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/15820","number":15820,"state":"closed","locked":false,"title":"[SPARK-18373][SPARK-18529][SS][Kafka]Make failOnDataLoss=false work with Spark jobs","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\nThis PR adds `CachedKafkaConsumer.getAndIgnoreLostData` to handle corner cases of `failOnDataLoss=false`.\r\n\r\nIt also resolves [SPARK-18529](https://issues.apache.org/jira/browse/SPARK-18529) after refactoring codes: Timeout will throw a TimeoutException.\r\n\r\n## How was this patch tested?\r\n\r\nBecause I cannot find any way to manually control the Kafka server to clean up logs, it's impossible to write unit tests for each corner case. 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