{"action":"created","issue":{"url":"https://api.github.com/repos/Graylog2/graylog2-server/issues/2018","repository_url":"https://api.github.com/repos/Graylog2/graylog2-server","labels_url":"https://api.github.com/repos/Graylog2/graylog2-server/issues/2018/labels{/name}","comments_url":"https://api.github.com/repos/Graylog2/graylog2-server/issues/2018/comments","events_url":"https://api.github.com/repos/Graylog2/graylog2-server/issues/2018/events","html_url":"https://github.com/Graylog2/graylog2-server/issues/2018","id":145670745,"number":2018,"title":"Unexpected exception. java.nio.channels.ClosedSelectorException","user":{"login":"HSVK","id":12095535,"avatar_url":"https://avatars.githubusercontent.com/u/12095535?v=3","gravatar_id":"","url":"https://api.github.com/users/HSVK","html_url":"https://github.com/HSVK","followers_url":"https://api.github.com/users/HSVK/followers","following_url":"https://api.github.com/users/HSVK/following{/other_user}","gists_url":"https://api.github.com/users/HSVK/gists{/gist_id}","starred_url":"https://api.github.com/users/HSVK/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/HSVK/subscriptions","organizations_url":"https://api.github.com/users/HSVK/orgs","repos_url":"https://api.github.com/users/HSVK/repos","events_url":"https://api.github.com/users/HSVK/events{/privacy}","received_events_url":"https://api.github.com/users/HSVK/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/Graylog2/graylog2-server/labels/bug","name":"bug","color":"e11d21"},{"url":"https://api.github.com/repos/Graylog2/graylog2-server/labels/ldap","name":"ldap","color":"fad8c7"},{"url":"https://api.github.com/repos/Graylog2/graylog2-server/labels/P3","name":"P3","color":"c7def8"},{"url":"https://api.github.com/repos/Graylog2/graylog2-server/labels/S2","name":"S2","color":"eb6420"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2016-04-04T12:33:31Z","updated_at":"2016-04-11T09:41:19Z","closed_at":null,"body":"### Problem description\r\nSeeing the \"Unexpected exception\" messages in graylog log, whenever this happens graylog slows down and the query time goes beyond 20 secs. \r\n\r\n2016-04-03T20:05:10.321-06:00 INFO  [AbstractValidatingSessionManager] Validating all active sessions...\r\n2016-04-03T20:05:10.325-06:00 INFO  [AbstractValidatingSessionManager] Finished session validation.  No sessions were stopped.\r\n2016-04-03T20:14:32.354-06:00 WARN  [NodePingThread] Did not find meta info of this node. Re-registering.\r\n2016-04-03T21:05:10.321-06:00 INFO  [AbstractValidatingSessionManager] Validating all active sessions...\r\n2016-04-03T21:05:10.325-06:00 INFO  [AbstractValidatingSessionManager] Finished session validation.  No sessions were stopped.\r\n2016-04-03T21:27:45.245-06:00 WARN  [NodePingThread] Did not find meta info of this node. Re-registering.\r\n2016-04-03T21:30:34.496-06:00 WARN  [DefaultExceptionMonitor] Unexpected exception.\r\njava.nio.channels.ClosedSelectorException\r\n        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:83)\r\n        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)\r\n        at org.apache.mina.transport.socket.nio.NioProcessor.select(NioProcessor.java:97)\r\n        at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1074)\r\n        at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)\r\n        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)\r\n        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)\r\n        at java.lang.Thread.run(Thread.java:745)\r\n2016-04-03T22:05:10.321-06:00 INFO  [AbstractValidatingSessionManager] Validating all active sessions...\r\n2016-04-03T22:05:10.325-06:00 INFO  [AbstractValidatingSessionManager] Finished session validation.  No sessions were stopped.\r\n2016-04-03T23:05:10.321-06:00 INFO  [AbstractValidatingSessionManager] Validating all active sessions...\r\n2016-04-03T23:05:10.325-06:00 INFO  [AbstractValidatingSessionManager] Finished session validation.  No sessions were stopped\r\n\r\n### Steps to reproduce the problem\r\n\r\n1. ... Happened when toggling between the web pages of users and roles. But i do not think that might be a problem.\r\n\r\n### Environment\r\n\r\n* Graylog Version: 1.3.3\r\n* Elasticsearch Version: 1.7.5\r\n* MongoDB Version: 3.2.3\r\n* Operating System: CentOS release 6.6 (Final) \r\n* Browser version:\r\n"},"comment":{"url":"https://api.github.com/repos/Graylog2/graylog2-server/issues/comments/208256795","html_url":"https://github.com/Graylog2/graylog2-server/issues/2018#issuecomment-208256795","issue_url":"https://api.github.com/repos/Graylog2/graylog2-server/issues/2018","id":208256795,"user":{"login":"kroepke","id":52014,"avatar_url":"https://avatars.githubusercontent.com/u/52014?v=3","gravatar_id":"","url":"https://api.github.com/users/kroepke","html_url":"https://github.com/kroepke","followers_url":"https://api.github.com/users/kroepke/followers","following_url":"https://api.github.com/users/kroepke/following{/other_user}","gists_url":"https://api.github.com/users/kroepke/gists{/gist_id}","starred_url":"https://api.github.com/users/kroepke/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kroepke/subscriptions","organizations_url":"https://api.github.com/users/kroepke/orgs","repos_url":"https://api.github.com/users/kroepke/repos","events_url":"https://api.github.com/users/kroepke/events{/privacy}","received_events_url":"https://api.github.com/users/kroepke/received_events","type":"User","site_admin":false},"created_at":"2016-04-11T09:41:19Z","updated_at":"2016-04-11T09:41:19Z","body":"Can you please also check whether your graylog server is overloaded in general? The warning `Did not find meta info of this node. Re-registering.` usually indicates a server which is too slow."}}