Idle cluster increasingly consumes CPU resources
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Key: ZOOKEEPER-883
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-883
Project: Zookeeper
Issue Type: Bug
Components: server
Reporter: Lars George
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.
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