Paul Togher created LOG4J2-2552:
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Summary: Allow access to the backlog state of the disruptor to
improve programatic reconfiguration of async appenders.
Key: LOG4J2-2552
URL: https://issues.apache.org/jira/browse/LOG4J2-2552
Project: Log4j 2
Issue Type: Improvement
Components: Core
Reporter: Paul Togher
This change is to help support programmatically switching async appenders. In
cases where it is important that logged messages go to the appender that was
configured at the time of writing the log event, the flushing the appender
buffer to disk is not sufficient, as the log events may still be in the
disruptor. This change provides access to test if the disruptor has items in
its backlog. This becomes useful in an application that is controlling its
logging config and logging events to ensure that no new logging events are
generated between removing one appender and adding another, so that it can also
ensure the change does not happen until all pending log events are processed.
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