Anyone ever seen the problem below when upgrading from 2.17
:~$ tail -f tomcat-dhis/logs/catalina.out May 13, 2015 3:26:07 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads SEVERE: The web application [] appears to have started a thread named [WeakCollectionCleaner] but has failed to stop it. This is very likely to create a memory leak. May 13, 2015 3:26:07 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [] created a ThreadLocal with key of type [org.h2.util.DateTimeUtils$1] (value [org.h2.util.DateTimeUtils$1@1f9ca18c]) and a value of type [java.util.GregorianCalendar] (value [java.util.GregorianCalendar[time=1431480358910,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=sun.util.calendar.ZoneInfo[id="Africa/Lusaka",offset=7200000,dstSavings=0,useDaylight=false,transitions=3,lastRule=null],firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,YEAR=2015,MONTH=4,WEEK_OF_YEAR=20,WEEK_OF_MONTH=3,DAY_OF_MONTH=13,DAY_OF_YEAR=133,DAY_OF_WEEK=4,DAY_OF_WEEK_IN_MONTH=2,AM_PM=0,HOUR=3,HOUR_OF_DAY=3,MINUTE=25,SECOND=58,MILLISECOND=910,ZONE_OFFSET=7200000,DST_OFFSET=0]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak. May 13, 2015 3:26:07 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@6431fe8a]) and a value of type [org.springframework.security.core.context.SecurityContextImpl] (value [org.springframework.security.core.context.SecurityContextImpl@ffffffff: Null authentication]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak. May 13, 2015 3:26:07 AM org.apache.coyote.AbstractProtocol stop INFO: Stopping ProtocolHandler ["http-bio-8080"] May 13, 2015 3:26:07 AM org.apache.coyote.AbstractProtocol destroy INFO: Destroying ProtocolHandler ["http-bio-8080"] e^C dhis@mmsserver:~$ Regards Simon Muyambo
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