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Posted to issues@spark.apache.org by "Chia-Ping Tsai (Jira)" <ji...@apache.org> on 2021/12/26 16:51:00 UTC
[jira] [Updated] (SPARK-37746) log4j2-defaults.properties is not working since log4j 2 is always initialized by default
[ https://issues.apache.org/jira/browse/SPARK-37746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chia-Ping Tsai updated SPARK-37746:
-----------------------------------
Description:
the code used to check initialization is shown below.
val log4j2Initialized = !LogManager.getRootLogger
.asInstanceOf[org.apache.logging.log4j.core.Logger].getAppenders.isEmpty
That works for log4j. However, log4j2 provides a default configuration so there is always a appender (ConsoleAppender) with error level.
reference from [https://logging.apache.org/log4j/2.x/manual/configuration.html#AutomaticConfiguration]
Log4j will provide a default configuration if it cannot locate a configuration file. The default configuration, provided in the DefaultConfiguration class, will set up:
* A [ConsoleAppender|https://logging.apache.org/log4j/2.x/log4j-core/apidocs/org/apache/logging/log4j/core/appender/ConsoleAppender.html] attached to the root logger.
* A [PatternLayout|https://logging.apache.org/log4j/2.x/log4j-core/apidocs/org/apache/logging/log4j/core/layout/PatternLayout.html] set to the pattern "%d\{HH:mm:ss.SSS} [%t] %-5level %logger\{36} - %msg%n" attached to the ConsoleAppender
Note that by default Log4j assigns the root logger to Level.ERROR.
was:
the code used to check initialization is shown below.
val log4j2Initialized = !LogManager.getRootLogger
.asInstanceOf[org.apache.logging.log4j.core.Logger].getAppenders.isEmpty
That works for log4j. However, log4j2 provides a default configuration so there is always a appender (ConsoleAppender) with error level.
according to [https://logging.apache.org/log4j/2.x/manual/configuration.html#AutomaticConfiguration]
Log4j will provide a default configuration if it cannot locate a configuration file. The default configuration, provided in the DefaultConfiguration class, will set up:
* A [ConsoleAppender|https://logging.apache.org/log4j/2.x/log4j-core/apidocs/org/apache/logging/log4j/core/appender/ConsoleAppender.html] attached to the root logger.
* A [PatternLayout|https://logging.apache.org/log4j/2.x/log4j-core/apidocs/org/apache/logging/log4j/core/layout/PatternLayout.html] set to the pattern "%d\{HH:mm:ss.SSS} [%t] %-5level %logger\{36} - %msg%n" attached to the ConsoleAppender
Note that by default Log4j assigns the root logger to Level.ERROR.
> log4j2-defaults.properties is not working since log4j 2 is always initialized by default
> ----------------------------------------------------------------------------------------
>
> Key: SPARK-37746
> URL: https://issues.apache.org/jira/browse/SPARK-37746
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.3.0
> Reporter: Chia-Ping Tsai
> Priority: Minor
>
> the code used to check initialization is shown below.
> val log4j2Initialized = !LogManager.getRootLogger
> .asInstanceOf[org.apache.logging.log4j.core.Logger].getAppenders.isEmpty
> That works for log4j. However, log4j2 provides a default configuration so there is always a appender (ConsoleAppender) with error level.
>
> reference from [https://logging.apache.org/log4j/2.x/manual/configuration.html#AutomaticConfiguration]
> Log4j will provide a default configuration if it cannot locate a configuration file. The default configuration, provided in the DefaultConfiguration class, will set up:
> * A [ConsoleAppender|https://logging.apache.org/log4j/2.x/log4j-core/apidocs/org/apache/logging/log4j/core/appender/ConsoleAppender.html] attached to the root logger.
> * A [PatternLayout|https://logging.apache.org/log4j/2.x/log4j-core/apidocs/org/apache/logging/log4j/core/layout/PatternLayout.html] set to the pattern "%d\{HH:mm:ss.SSS} [%t] %-5level %logger\{36} - %msg%n" attached to the ConsoleAppender
> Note that by default Log4j assigns the root logger to Level.ERROR.
>
>
>
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