Chris Nauroth created ZOOKEEPER-2424:
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Summary: Detect and log possible GC churn in servers.
Key: ZOOKEEPER-2424
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2424
Project: ZooKeeper
Issue Type: Improvement
Components: server
Reporter: Chris Nauroth
Fix For: 3.5.3
Excessive JVM garbage collection pauses can harm the stability of a ZooKeeper
ensemble. If a stop-the-world GC pause in a server lasts long enough, then the
the node will drop out of the ensemble. If this happens on multiple nodes
simultaneously, then there is a risk of loss of quorum. This issue proposes to
detect long GC pauses, log warnings about them, and expose metrics about them.
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