Status/Resolution/Reason: Closed/Deferred/PRNeedInfo
Reporter/Name(from Bugbase): A. B. / ()
Created: 02/11/2019
Components: Caching, Distributed Caching
Versions: 2018
Failure Type: Others
Found In Build/Fixed In Build: 2018.0.01.311402 /
Priority/Frequency: Normal /
Locale/System: / Win 2016
Vote Count: 0
Problem Description:
We have 2 ColdFusion 2018 instances, one called StudiemeterStaging2018, the other StudiereaderStaging2018. On 2 January 2019 ColdFusion wrote the following error-messages to coldfusion-out.log and hibernatesql.log of the instance StudiemeterStaging2018 (the datasource name is dsn_SM7):
01/02 17:25:54 [_ORM_StudiemeterStaging2018_dsn_SM7] ERROR Error locating Hibernate Session Factory
java.lang.ClassCastException: java.base/java.util.HashMap cannot be cast to java.base/java.util.Properties
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.locateSessionFactory(ProviderMBeanRegistrationHelper.java:142)
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.run(ProviderMBeanRegistrationHelper.java:101)
at java.base/java.util.TimerThread.mainLoop(Timer.java:556)
at java.base/java.util.TimerThread.run(Timer.java:506)
ColdFusion wrote between three and four error messages every minute from 17:25 to 23:43, when it stopped suddenly. Since then no such error messages have been written in StudiemeterStaging2018.
However, yesterday (February 10, 2019) at 11:40:01, ColdFusion suddenly started writing a similar error message to coldfusion-out.log and hibernatesql.log of the other instance, StudiereaderStaging2018:
02/10 11:40:01 [_ORM_StudiereaderStaging2018_dsn_SM7] ERROR Error locating Hibernate Session Factory
java.lang.ClassCastException: java.base/java.util.HashMap cannot be cast to java.base/java.util.Properties
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.locateSessionFactory(ProviderMBeanRegistrationHelper.java:142)
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.run(ProviderMBeanRegistrationHelper.java:101)
at java.base/java.util.TimerThread.mainLoop(Timer.java:556)
at java.base/java.util.TimerThread.run(Timer.java:506)
Steps to Reproduce:
We are as yet unable to reproduce the error. Nevertheless, we suspect that it may be caused by an inconsistency in the class ProviderMBeanRegistrationHelper.class within CF_DIR/lib/hibernate-ehcache-5.2.10.Final.jar.
1) We use distributed cache, that is, ehcache-2.10.6.jar together with terracotta-toolkit-runtime-4.3.6.jar.
2) ORM settings in our Application.cfc are:
this.ormSettings={
cfcLocation: [getDirectoryFromPath(getCurrentTemplatePath()) & "nl/deviant/studiemeter/orm"],
secondaryCacheEnabled: true,
cacheProvider: "ehcache",
eventHandling: true,
logSql: false,
searchEnabled: true,
autoIndex: true,
language: "Dutch"
};
3) ehcache.xml and ProviderMBeanRegistrationHelper.java attached
Actual Result:
The error
02/10 11:40:01 [_ORM_StudiereaderStaging2018_dsn_SM7] ERROR Error locating Hibernate Session Factory
java.lang.ClassCastException: java.base/java.util.HashMap cannot be cast to java.base/java.util.Properties
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.locateSessionFactory(ProviderMBeanRegistrationHelper.java:142)
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.run(ProviderMBeanRegistrationHelper.java:101)
at java.base/java.util.TimerThread.mainLoop(Timer.java:556)
at java.base/java.util.TimerThread.run(Timer.java:506)
Expected Result:
1) No such error
2) Correction for the following line of code in ProviderMBeanRegistrationHelper.java:
// Around line 118
Properties props = (Properties)propertiesField.get(sessionFactory);
Apparently, it fails sometimes because propertiesField.get(sessionFactory) is a Map that cannot be cast to Properties.
Any Workarounds:
None known.Attachments:
Comments: