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https://issues.apache.org/jira/browse/LOG4J2-1951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16061095#comment-16061095
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Chris Slater commented on LOG4J2-1951:
--------------------------------------
See comment in LOG4J2-1949 for a possible workaround
> On shutdown, JDBC appender does not write buffered log messages to failover
> appender if database is unavailable
> ---------------------------------------------------------------------------------------------------------------
>
> Key: LOG4J2-1951
> URL: https://issues.apache.org/jira/browse/LOG4J2-1951
> Project: Log4j 2
> Issue Type: Bug
> Affects Versions: 2.8.2
> Reporter: Chris Slater
>
> With the following sample config:
> {code:xml}
> <JDBC name="AuditLog-Database" tableName="audit"
> ignoreExceptions="false" bufferSize="250">
> <ConnectionFactory class="com.example.MyConnectionFactory"
> method="getConnection"/>
> <Column name="D_TIME" isEventTimestamp="true"/>
> <ColumnMapping name="AUDIT_ID" pattern="%X{AUDIT.ID}"/>
> <ColumnMapping name="AUDIT_MESSAGE" pattern="%X{AUDIT.MESSAGE}"/>
> </JDBC>
> <RollingFile name="AuditLog-Failover-File"
> fileName="${sys:env.home}/log/failover.log"
>
> filePattern="${sys:env.home}/log/failover.%d{yyyy-MM-dd}.log"
> ignoreExceptions="false">
> <PatternLayout>
> <pattern>%d{ISO8601}| %X{AUDIT.ID}|
> %X{AUDIT.MESSAGE}%n</pattern>
> </PatternLayout>
> <Policies>
> <TimeBasedTriggeringPolicy />
> </Policies>
> </RollingFile>
> <Failover name="AuditLog" primary="AuditLog-Database">
> <Failovers>
> <AppenderRef ref="AuditLog-Failover-File"/>
> </Failovers>
> </Failover>
> {code}
> If the database has failed and the application is shut down, the log messages
> are not written to the failover appender.
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