Document URL:
https://docs.openshift.com/container-platform/4.6/logging/cluster-logging-external.html#cluster-logging-collector-log-forwarding-about_cluster-logging-external
Section Number and Name:
Fluentd log handling when the external log aggregator is unavailable

Describe the issue:
The document shows that you cannot adjust the buffer size, however, advanced configuration for the log forwarder, including adjusting the buffer size, is available since OCP 4.6.

Suggestions for improvement:
Modify the description and add a link to the advanced configuration for the log forwarder.
https://docs.openshift.com/container-platform/4.6/logging/config/cluster-logging-collector.html#cluster-logging-collector-tuning_cluster-logging-collector
Additional information: