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Patrick Hunt commented on ZOOKEEPER-883: ---------------------------------------- This issue sounds very similar to ZOOKEEPER-880 -- they are also using Nagios to monitor the election port in that case as well. > Idle cluster increasingly consumes CPU resources > ------------------------------------------------ > > Key: ZOOKEEPER-883 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-883 > Project: Zookeeper > Issue Type: Bug > Components: server > Affects Versions: 3.3.1 > Reporter: Lars George > Attachments: Archive.zip > > > Monitoring the ZooKeeper nodes by polling the various ports using Nagios' > open port checks seems to cause a substantial raise of CPU being used by the > ZooKeeper daemons. Over the course of a week an idle cluster grew from a > baseline 2% to >10% CPU usage. Attached is a stack dump and logs showing the > occupied threads. At the end the daemon starts failing on "too many open > files" errors as all handles are used up. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.