Hüseyin Kartal created LOG4J2-1200:
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Summary: Kill process with Socket Appender causes flood of
Connection-Reset logs
Key: LOG4J2-1200
URL: https://issues.apache.org/jira/browse/LOG4J2-1200
Project: Log4j 2
Issue Type: Bug
Components: Appenders, Core
Affects Versions: 2.4.1
Environment: win64 java8 osgi
Reporter: Hüseyin Kartal
Hi,
we use primary the SocketAppender to send log messages to a server instance.
The server instance is based on the TcpSocketServer and is started as follows:
h1. Server Context
h2. Startup
{code}
new TcpSocketServer<>(9500, new
JsonInputStreamLogEventBridge()).startNewThread();
{code}
h2. Configuration
{code:xml}
<?xml version="1.0" encoding="UTF-8"?>
<Configuration monitorInterval="0" strict="true" name="XMLConfig"
status="error" shutdownHook="enable"
xmlns="http://jakarta.apache.org/log4j2/config";
xmlns:events="http://jakarta.apache.org/log4j2/events";
xmlns:levels="http://jakarta.apache.org/log4j2/levels";
xmlns:xi="http://www.w3.org/2001/XInclude";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://jakarta.apache.org/log4j2/config Log4j-config.xsd
http://jakarta.apache.org/log4j2/events Log4j-events.xsd
http://jakarta.apache.org/log4j2/levels Log4j-levels.xsd">
<xi:include href="log4j2-properties.xml" />
<Appenders>
<Appender type="Console" name="OUT">
<Layout Type="PatternLayout"
Pattern="${sys:log.application}: ${pattern}" />
</Appender>
<Appender type="RollingRandomAccessFile" name="OUT-FILE"
fileName="${file.name.out}${file.suffix}"
filePattern="${file.name.out}-%2i${file.suffix}">
<Layout Type="PatternLayout" Pattern="${pattern}" />
<Policies>
<SizeBasedTriggeringPolicy
size="${sizeBasedTriggeringPolicy.size}" />
</Policies>
<DefaultRolloverStrategy
max="${defaultRolloverStrategy.max}" fileIndex="min" />
</Appender>
<Appender type="RollingRandomAccessFile" name="ERR-FILE"
fileName="${file.name.err}${file.suffix}"
filePattern="${file.name.err}-%2i${file.suffix}">
<Layout Type="PatternLayout" Pattern="${pattern}" />
<Policies>
<SizeBasedTriggeringPolicy
size="${sizeBasedTriggeringPolicy.size}" />
</Policies>
<DefaultRolloverStrategy
max="${defaultRolloverStrategy.max}" fileIndex="min" />
</Appender>
<Async name="ASYNC-OUT">
<AppenderRef ref="OUT" />
</Async>
<Async name="ASYNC-OUT-FILE">
<AppenderRef ref="OUT-FILE" />
</Async>
</Appenders>
<Loggers>
<asyncRoot level="all">
<AppenderRef ref="ASYNC-OUT" />
<AppenderRef ref="ASYNC-OUT-FILE" />
</asyncRoot>
<asyncLogger name="com" level="error" />
<asyncLogger name="org" level="error" />
<asyncLogger name="javax" level="error" />
</Loggers>
</Configuration>
{code}
h1. Client context
h2. Configuration
{code:xml}
<?xml version="1.0" encoding="UTF-8"?>
<Configuration monitorInterval="0" strict="true" name="XMLConfig"
status="fatal" shutdownHook="enable"
xmlns="http://jakarta.apache.org/log4j2/config";
xmlns:events="http://jakarta.apache.org/log4j2/events";
xmlns:levels="http://jakarta.apache.org/log4j2/levels";
xmlns:xi="http://www.w3.org/2001/XInclude";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://jakarta.apache.org/log4j2/config Log4j-config.xsd
http://jakarta.apache.org/log4j2/events Log4j-events.xsd
http://jakarta.apache.org/log4j2/levels Log4j-levels.xsd">
<xi:include href="log4j2-properties.xml" />
<Appenders>
<Appender type="Socket" name="OUT-SOCKET"
host="${sys:log.host}" port="${sys:log.port}" protocol="${sys:log.protocol}"
ignoreExceptions="false">
<Layout type="JsonLayout" compact="true"
eventEol="true" complete="true" properties="true" />
</Appender>
<Appender type="Failover" name="OUT-FAIL" primary="OUT-SOCKET">
<Failovers>
<Appender type="RollingRandomAccessFile"
name="OUT-FILE" fileName="${file.name.tmp}${file.suffix}"
filePattern="${file.name.tmp}-%2i${file.suffix}" ignoreExceptions="false">
<Layout Type="PatternLayout"
Pattern="${pattern.single}" />
<Policies>
<SizeBasedTriggeringPolicy
size="${sizeBasedTriggeringPolicy.size}" />
</Policies>
<DefaultRolloverStrategy
max="${defaultRolloverStrategy.max}" fileIndex="min" />
</Appender>
</Failovers>
</Appender>
<Async name="ASYNC-OUT-FAIL">
<AppenderRef ref="OUT-FAIL" />
</Async>
</Appenders>
<Loggers>
<asyncRoot level="all">
<AppenderRef ref="ASYNC-OUT-FAIL" />
</asyncRoot>
<asyncLogger name="com" level="error" />
<asyncLogger name="org" level="error" />
<asyncLogger name="javax" level="error" />
</Loggers>
</Configuration>
{code}
h1. Test
h2. Code
{code}
public abstract class LogTest {
public static void main(String... args) throws Exception {
Logger logger = LogManager.getLogger();
for (int i = 0; i < Integer.MAX_VALUE; i++) {
logger.info(i);
}
System.exit(0);
}
}
{code}
h2. Result
The client and server are started as different applications and uses seperate
jvm. If the client terminates with system.exit everything is fine. But if the
client is Terminiated by TaskKill or the jvm crashes. The server outputs
multiple times the following trace.
{code}
2015-11-18 11:26:33,479 Thread-9 ERROR java.net.SocketException: Connection
reset
at java.net.SocketInputStream.read(SocketInputStream.java:154)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at java.net.SocketInputStream.read(SocketInputStream.java:127)
at
org.apache.logging.log4j.core.net.server.InputStreamLogEventBridge.logEvents(InputStreamLogEventBridge.java:62)
at
org.apache.logging.log4j.core.net.server.TcpSocketServer$SocketHandler.run(TcpSocketServer.java:62)
{code}
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