症状

Seeing the following errors in the wrapper.log file.

JVM appears hung: Timed out waiting for signal from JVM.
ERROR | wrapper | 2009/02/23 03:39:39 | JVM did not exit on request, terminated
DEBUG | wrapper | 2009/02/23 03:39:40 | Waiting 5 seconds before launching another JVM.
STATUS | wrapper | 2009/02/23 03:39:44 | Launching a JVM...

原因

This message usually occurs because your cpu is hitting 100% for around 30+ seconds.

See the article http://lists.hippo.nl/pipermail/hippocms-dev/2006-April/001488.html.

(Fisheye may use high CPU during the indexing process, or the high cpu may be caused by another application like svn).

ソリューション

Try adding the parameter

wrapper.ping.timeout=120

to your wrapper.conf file, to increase the timeout period and thus prevent the JVM from being terminated. You will need to restart your server after setting this value.