Grails

Tomcat reports memory leaks of threads and ThreadLocals on shutdown or undeloy

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Duplicate
  • Affects Version/s: 2.0.3
  • Fix Version/s: None
  • Component/s: None
  • Labels:
  • Environment:
    Ubuntu 12.04,
    OpenJDK 1.6.0_24 (64-bit),
    Tomcat 7.0.26

Description

When creating a simple Grails application and deploying the WAR file on a tomcat, the tomcat logs report memory leaks of threads and ThreadLocal variables when the application is undeployed or the server is shut down.

The sample application (created with 'grails bug-report') is attached to this bug report.

Related issues:

Excerpt of the catalina.out log file:

...

22-May-2012 17:25:21 org.apache.catalina.core.StandardService stopInternal
INFO: Stopping service Catalina
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/SecExTest-0.1] appears to have started a thread named [Timer-1] but has failed to stop it. This is very likely to create a memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2@3051fa1d]) and a value of type [java.lang.Boolean] (value [false]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3@55fb9eb3]) and a value of type [java.lang.Integer] (value [0]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2@3051fa1d]) and a value of type [java.lang.Boolean] (value [false]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3@55fb9eb3]) and a value of type [java.lang.Integer] (value [0]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2@3051fa1d]) and a value of type [java.lang.Boolean] (value [false]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3@55fb9eb3]) and a value of type [java.lang.Integer] (value [0]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2@3051fa1d]) and a value of type [java.lang.Boolean] (value [false]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3@55fb9eb3]) and a value of type [java.lang.Integer] (value [0]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2@3051fa1d]) and a value of type [java.lang.Boolean] (value [false]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3@55fb9eb3]) and a value of type [java.lang.Integer] (value [0]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2@3051fa1d]) and a value of type [java.lang.Boolean] (value [false]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3@55fb9eb3]) and a value of type [java.lang.Integer] (value [0]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$2@3051fa1d]) and a value of type [java.lang.Boolean] (value [false]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1] (value [org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractSavePersistentMethod$1@4f46c96c]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
22-May-2012 17:25:21 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/SecExTest-0.1] created a ThreadLocal with key of type [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3] (value [org.codehaus.groovy.grails.orm.hibernate.support.HibernatePersistenceContextInterceptor$3@55fb9eb3]) and a value of type [java.lang.Integer] (value [0]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.

...

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Graeme Rocher added a comment -

duplicates GRAILS-5823

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Graeme Rocher added a comment - duplicates GRAILS-5823

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  • Assignee:
    Graeme Rocher
    Reporter:
    Benjamin Wolff
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Dates

  • Created:
    Updated:
    Resolved: