I am getting OutOfMemory Exception in my app. I have taken the heap dump and ananlyzed through MAT. While analyzing my app memory usage I found following suspect. I am unable to understand the main cause behind these suspects.
Please help me in understanding this leakage suspects and what is relevant solution for it.
Suspect 1
The thread org.apache.tomcat.util.threads.TaskThread @ 0x2bdf5ff8 "ajp-bio-9002"-exec-5 keeps local variables with total size 113,973,288 (50.72%) bytes.
The memory is accumulated in one instance of "org.apache.tomcat.util.threads.TaskThread" loaded by "org.apache.catalina.loader.StandardClassLoader @ 0x293b4488".
Thread Stack
"ajp-bio-9002"-exec-5 at java.util.Arrays.copyOf([CI)[C (Arrays.java:2882) at java.lang.AbstractStringBuilder.expandCapacity(I)V (AbstractStringBuilder.java:100) at java.lang.AbstractStringBuilder.append(C)Ljava/lang/AbstractStringBuilder; (AbstractStringBuilder.java:572) at java.lang.StringBuffer.append(C)Ljava/lang/StringBuffer; (StringBuffer.java:320) at org.apache.myfaces.renderkit.html.util.ReducedHTMLParser.consumeString(C)Ljava/lang/String; (ReducedHTMLParser.java:303) at org.apache.myfaces.renderkit.html.util.ReducedHTMLParser.consumeAttrValue()Ljava/lang/String; (ReducedHTMLParser.java:327) at org.apache.myfaces.renderkit.html.util.ReducedHTMLParser.parse()V (ReducedHTMLParser.java:579) at org.apache.myfaces.renderkit.html.util.ReducedHTMLParser.parse(Ljava/lang/CharSequence;Lorg/apache/myfaces/renderkit/html/util/CallbackListener;)V (ReducedHTMLParser.java:66) at org.apache.myfaces.renderkit.html.util.DefaultAddResource.parseResponse(Ljavax/servlet/http/HttpServletRequest;Ljava/lang/String;Ljavax/servlet/http/HttpServletResponse;)V (DefaultAddResource.java:699) at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;Ljavax/servlet/FilterChain;)V (ExtensionsFilter.java:157) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V (ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V (ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V (StandardWrapperValve.java:240) at org.apache.catalina.core.StandardContextValve.invoke(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V (StandardContextValve.java:164) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V (AuthenticatorBase.java:462) at org.apache.catalina.core.StandardHostValve.invoke(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V (StandardHostValve.java:164) at org.apache.catalina.valves.ErrorReportValve.invoke(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V (ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V (AccessLogValve.java:562) at org.apache.catalina.core.StandardEngineValve.invoke(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V (StandardEngineValve.java:118) at org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V (JvmRouteBinderValve.java:218) at org.apache.catalina.ha.tcp.ReplicationValve.invoke(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V (ReplicationValve.java:333) at org.apache.catalina.connector.CoyoteAdapter.service(Lorg/apache/coyote/Request;Lorg/apache/coyote/Response;)V (CoyoteAdapter.java:395) at org.apache.coyote.ajp.AjpProcessor.process(Lorg/apache/tomcat/util/net/SocketWrapper;)Lorg/apache/tomcat/util/net/AbstractEndpoint$Handler$SocketState; (AjpProcessor.java:301) at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(Lorg/apache/tomcat/util/net/SocketWrapper;Lorg/apache/tomcat/util/net/SocketStatus;)Lorg/apache/tomcat/util/net/AbstractEndpoint$Handler$SocketState; (AjpProtocol.java:183) at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(Lorg/apache/tomcat/util/net/SocketWrapper;)Lorg/apache/tomcat/util/net/AbstractEndpoint$Handler$SocketState; (AjpProtocol.java:169) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run()V (JIoEndpoint.java:302) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Ljava/lang/Runnable;)V (ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run()V (ThreadPoolExecutor.java:908) at java.lang.Thread.run()V (Thread.java:662)
Suspect 2
One instance of "java.lang.StringBuffer" loaded by "" occupies 59,216,088 (26.35%) bytes. The instance is referenced by org.apache.myfaces.renderkit.html.util.ReducedHTMLParser @ 0x276990e8 , loaded by "org.apache.catalina.loader.WebappClassLoader @ 0x29592038". The memory is accumulated in one instance of "char[]" loaded by "".
