[
https://issues.apache.org/jira/browse/LOG4J2-2167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Christian Salway updated LOG4J2-2167:
-------------------------------------
Description:
I'm introducing log4j2 as the logger into my application and when I do that, on
a reload, undeploy or stop of the Application, a memory leak is left, which
only happens once I introduce the logger into the code.
{noformat}
The following web applications were stopped (reloaded, undeployed), but their
classes from previous runs are still loaded in memory, thus causing a memory
leak (use a profiler to confirm):
/myapp
{noformat}
My log4j2.xml:
{code:xml}
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="trace">
<Appenders>
<Console name="Console">
<PatternLayout pattern="%d %p [%c] %m%n" />
</Console>
<File name="File" bufferedIO="true"
fileName="${env:CATALINA_BASE}/logs/app-${date:yyyy-mm-dd}.log">
<PatternLayout pattern="%d %p %m%n" />
</File>
</Appenders>
<Loggers>
<Root level="all" includeLocation="false">
<AppenderRef ref="Console" />
<AppenderRef ref="File" />
</Root>
</Loggers>
</Configuration>
{code}
My dependencies in pom.xml:
{code:xml}
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.10.0</version>
</dependency>
{code}
My WebServlet:
{code:java}
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
@WebServlet(name = "Servlet", urlPatterns = {"/servlet"}, loadOnStartup = 1)
public class Servlet extends HttpServlet {
private final Logger logger = LogManager.getLogger(Servlet.class);
protected void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
logger.info("doGet");
PrintWriter out = response.getWriter();
out.print("Servlet loaded");
out.flush();
out.close();
}
}
{code}
was:
I'm introducing log4j2 as the logger into my application and when I do that, on
a reload, undeploy or stop of the Application, a memory leak is left, which
only happens once I introduce the logger into the code.
{noformat}
The following web applications were stopped (reloaded, undeployed), but their
classes from previous runs are still loaded in memory, thus causing a memory
leak (use a profiler to confirm):
/myapp
{noformat}
My log4j2.xml:
{code:xml}
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<Appenders>
<Console name="Console">
<PatternLayout pattern="%d %p [%c] %m%n" />
</Console>
<File name="File" bufferedIO="true"
fileName="logs/log4j2-file-sync-${date:HH:mm:ss.SSS}.log">
<PatternLayout pattern="%d %p %m%n" />
</File>
</Appenders>
<Loggers>
<Root level="all" includeLocation="false">
<AppenderRef ref="Console" />
<AppenderRef ref="File" />
</Root>
</Loggers>
</Configuration>
{code}
My dependencies in pom.xml:
{code:xml}
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.10.0</version>
</dependency>
{code}
My WebServlet:
{code:java}
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
@WebServlet(name = "Servlet", urlPatterns = {"/servlet"}, loadOnStartup = 1)
public class Servlet extends HttpServlet {
private final Logger logger = LogManager.getLogger(Servlet.class);
protected void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
logger.info("doGet");
PrintWriter out = response.getWriter();
out.print("Servlet loaded");
out.flush();
out.close();
}
}
{code}
> Memory leak in Apache Tomcat/8.5.24
> -----------------------------------
>
> Key: LOG4J2-2167
> URL: https://issues.apache.org/jira/browse/LOG4J2-2167
> Project: Log4j 2
> Issue Type: Bug
> Components: Web/Servlet
> Affects Versions: 2.10.0
> Environment: OS (on AWS): ubuntu-xenial-16.04-amd64-server-20171121.1
> (ami-fcc4db98)
> Server version: Apache Tomcat/8.5.24
> Server built: Nov 27 2017 13:05:30 UTC
> Server number: 8.5.24.0
> JVM Version: 1.8.0_151-b12
> JVM Vendor: Oracle Corporation
> Reporter: Christian Salway
>
> I'm introducing log4j2 as the logger into my application and when I do that,
> on a reload, undeploy or stop of the Application, a memory leak is left,
> which only happens once I introduce the logger into the code.
> {noformat}
> The following web applications were stopped (reloaded, undeployed), but their
> classes from previous runs are still loaded in memory, thus causing a memory
> leak (use a profiler to confirm):
> /myapp
> {noformat}
> My log4j2.xml:
> {code:xml}
> <?xml version="1.0" encoding="UTF-8"?>
> <Configuration status="trace">
> <Appenders>
> <Console name="Console">
> <PatternLayout pattern="%d %p [%c] %m%n" />
> </Console>
> <File name="File" bufferedIO="true"
> fileName="${env:CATALINA_BASE}/logs/app-${date:yyyy-mm-dd}.log">
> <PatternLayout pattern="%d %p %m%n" />
> </File>
> </Appenders>
> <Loggers>
> <Root level="all" includeLocation="false">
> <AppenderRef ref="Console" />
> <AppenderRef ref="File" />
> </Root>
> </Loggers>
> </Configuration>
> {code}
> My dependencies in pom.xml:
> {code:xml}
> <dependency>
> <groupId>org.apache.logging.log4j</groupId>
> <artifactId>log4j-api</artifactId>
> <version>2.10.0</version>
> </dependency>
> <dependency>
> <groupId>org.apache.logging.log4j</groupId>
> <artifactId>log4j-core</artifactId>
> <version>2.10.0</version>
> </dependency>
> {code}
> My WebServlet:
> {code:java}
> import org.apache.logging.log4j.Logger;
> import org.apache.logging.log4j.LogManager;
> import javax.servlet.ServletException;
> import javax.servlet.annotation.WebServlet;
> import javax.servlet.http.HttpServlet;
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.http.HttpServletResponse;
> import java.io.IOException;
> import java.io.PrintWriter;
> @WebServlet(name = "Servlet", urlPatterns = {"/servlet"}, loadOnStartup = 1)
> public class Servlet extends HttpServlet {
> private final Logger logger = LogManager.getLogger(Servlet.class);
> protected void doGet(HttpServletRequest request, HttpServletResponse
> response) throws ServletException, IOException {
> logger.info("doGet");
> PrintWriter out = response.getWriter();
> out.print("Servlet loaded");
> out.flush();
> out.close();
> }
> }
> {code}
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
