{"action":"opened","issue":{"url":"https://api.github.com/repos/alibaba/jstorm/issues/218","repository_url":"https://api.github.com/repos/alibaba/jstorm","labels_url":"https://api.github.com/repos/alibaba/jstorm/issues/218/labels{/name}","comments_url":"https://api.github.com/repos/alibaba/jstorm/issues/218/comments","events_url":"https://api.github.com/repos/alibaba/jstorm/issues/218/events","html_url":"https://github.com/alibaba/jstorm/issues/218","id":140355605,"number":218,"title":"jstorm-kafka的spout空跑问题","user":{"login":"cocofree","id":16300499,"avatar_url":"https://avatars.githubusercontent.com/u/16300499?v=3","gravatar_id":"","url":"https://api.github.com/users/cocofree","html_url":"https://github.com/cocofree","followers_url":"https://api.github.com/users/cocofree/followers","following_url":"https://api.github.com/users/cocofree/following{/other_user}","gists_url":"https://api.github.com/users/cocofree/gists{/gist_id}","starred_url":"https://api.github.com/users/cocofree/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cocofree/subscriptions","organizations_url":"https://api.github.com/users/cocofree/orgs","repos_url":"https://api.github.com/users/cocofree/repos","events_url":"https://api.github.com/users/cocofree/events{/privacy}","received_events_url":"https://api.github.com/users/cocofree/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-03-12T07:02:30Z","updated_at":"2016-03-12T07:02:30Z","closed_at":null,"body":"现象：当kafka数据生产速度小于消费时，log日志里面打了非常多的\"fetch null message from offset\"\r\n问题：jstorm的spout已经将nextTuple和ack/fail分成两个线程，看了下jstorm-kafka的源码，是不是可在在nextTuple中增加个Thread.sleep(100)来减少空跑的次数？"}}