Memory leaks on shutdown (apache tika and HSQLDB Timer)

• Type: Technical Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.1.0 CE RC1
• Fix Version/s: --Sprint 12/11, 6.1.0 CE RC1
• Component/s: Documents & Media, Environments, Environments > Databases
• Labels:
  • bugsquad
• Environment: Apache Tomcat 6.0.29; Chrome, FF 6; Ubuntu Linux 10.04; HSQL

1-Add PDF to document library
2-Wait for PDF preview to generate
3-Then, shutdown Liferay-

These errors appears in logs. Seems there are memory leaks:

20-ago-2011 17:41:24 org.apache.coyote.http11.Http11Protocol pause
INFO: Pausando Coyote HTTP/1.1 en puerto http-8080
20-ago-2011 17:41:25 org.apache.catalina.core.StandardService stop
INFO: Parando servicio Catalina
20-ago-2011 17:41:27 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
GRAVE: The web application [] appears to have started a thread named [Apache Tika] but has failed to stop it. This is very likely to create a memory leak.
20-ago-2011 17:41:27 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
GRAVE: The web application [] appears to have started a thread named [HSQLDB Timer @a96863] but has failed to stop it. This is very likely to create a memory leak.