Hi All
I recently upgraded to 0.9.13 and am experiencing an issue with my Production
server.
This is potentially a Tomcat issue or JDBC driver issue.
If anyone can comment that would be great.
Looking at the Catalina.out file I found
WARNING: The web application [guacamole] appears to have started a thread named
[Abandoned connection cleanup thread] but has failed to stop it. This is very
likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:43)
SEVERE: The web application [guacamole] created a ThreadLocal with key of type
[com.google.inject.internal.InjectorImpl$1] (value
[com.google.inject.internal.InjectorImpl$1@2c0acdd7]) and a value of type
[java.lang.Object[]] (value [[Ljava.lang.Object;@2ee3d179]) 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.
Aug 02, 2017 8:25:43 PM org.apache.catalina.loader.WebappClassLoaderBase
checkThreadLocalMapForLeaks
SEVERE: The web application [guacamole] created a ThreadLocal with key of type
[com.google.inject.internal.InjectorImpl$1] (value
[com.google.inject.internal.InjectorImpl$1@1b5b9da0]) and a value of type
[java.lang.Object[]] (value [[Ljava.lang.Object;@b5aea9c]) but failed to remove
it when the web application was stopped. Threads are going to be renewed over
time to try and avoid a probable memory leak.
Which leads too
Aug 03, 2017 10:04:16 PM org.apache.tomcat.util.net.NioEndpoint$Poller run
SEVERE:
java.lang.OutOfMemoryError: Java heap space
I am just running the standard apt-get configuration of Tomcat 8 on Ubuntu
server 16.4
The server has 4GB of ram
Here is the output of Free
root@MGMT-GUAC-01:/var/log/tomcat8# free -h
total used free shared buff/cache available
Mem: 3.4G 939M 128M 22M 2.3G 2.1G
Swap: 0B 0B 0B
A restart of tomcat resolves the issue for a period of time, I have just
written a cron job that restarts tomcat on appearance of this issue.
Any advice greatly appreciated.
