Hi there!

We recently discovered that the last log lines of a short-living container were not sent on shutdown.

Fluentbit with the SQS plugin are collecting the logs from a side-car container in an ECS task. When the main container exists, the SIGTERM signal is sent to Fluentbit which makes it stop after the Grace period.

Looking at the plugin code, when FLBPluginExit() is invoked, the pending records in SqsRecords are not sent to SQS queue. A simple status is returned but nothing else is done :

Padding the logs with 10 dummy lines at the end is our current workaround. Some of those padding logs are never sent obvisouly.