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| Apache Log4j 2.0-beta2 RELEASE NOTES |
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| The Apache Log4j 2 team is pleased to announce the Log4j 2.0-beta2 release! |
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| Apache Log4j 2.0-beta2 requires a minimum of Java 5 to build and run. Basic compatibility with |
| Log4j 1.x is provided through the log4j12-api component, however it does not implement some of the |
| very implementation specific classes and methods. The package names and Maven groupId have been changed to |
| org.apache.logging.log4j to avoid any conflicts with log4j 1.x. |
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| Bug fixes and enhancements |
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| Changes in this version include: |
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| New features: |
| o LOG4J2-35: Add interval and modulate options to TimeBasedTriggeringPolicy to allow more fine-grained control of |
| when file rolling should occur. |
| o LOG4J2-58: Add support for filtering packages from stack traces. |
| o LOG4J2-84: If system property "disableThreadContextStack" is set pushes to the ThreadContext will be ignored. If |
| system property "disableThreadContext" is set both puts and pushes will be ignored. |
| o LOG4J2-83: If system property "disableThreadContextMap" is set puts to the ThreadContext will be ignored. If |
| system property "disableThreadContext" is set both puts and pushes will be ignored. |
| o Add support for ANSI colors by adding the highlight and style pattern converters. Fix pattern |
| parsing to allow nested patterns. |
| o Allow the status logging to be directed to stderr or to a file. |
| o Add getFormats to MultiformatMessage and allow StructuredDataMessage to format as XML. |
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| Fixed Bugs: |
| o DefaultConfiguration was not starting the Console Appender. |
| o LOG4J2-92: Converted DynamicThresholdFilter to use KeyValuePair. Fixed bugs in the Map-based filters |
| to allow declaration of multiple values for a key to match the documentation. |
| o LOG4J2-88: Many logging methods in AbstractLogger were set to an incorrect logging level. catching was |
| using the THROWING marker and was set to debug instead of error. |
| o LOG4J2-91: Log4j 1.2 adapter's Category class was missing 3 log methods. |
| o LOG4J2-84: If the ThreadContext stack is empty the LogEvent will contain a null value to reduce the overhead of |
| creating log events and in the size of the serialized object. Changed the ThreadContext stack to use |
| a custom stack interface instead of java.util.Stack as that class is overly heavy. This change will |
| cause an API incompatibility. |
| o LOG4J2-83: If the ThreadContext map is empty the LogEvent will contain a null value to reduce the overhead of creating |
| log events and in the size of the serialized object. |
| o LOG4J2-90: Add documentation on client vs server mode to performance page. |
| o Move variable substitution from PatternLayout to appropriate converters to improve performance. |
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| Changes: |
| o Made ParameterizedMessage, StringFormattedMessage and ThreadDumpMessage immutable. LocalizedMessage is |
| immutable except that it will be updated with the logger name when it is added to the LogEvent. |
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| For complete information on Apache Log4j 2, including instructions on how to submit bug reports, |
| patches, or suggestions for improvement, see the Apache Apache Log4j 2 website: |
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| http://logging.apache.org/log4j/2.x/ |
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