emitter_name 'emitter_for_multiline.0' already exists

[duj4]

Bug Report

Describe the bug
It seems multiline filter cannot be configured as processors in the pipeline, Fluent-Bit pod failed to start with error as below:

To Reproduce
Set up the configuration as below:

It works fine when:

1. There is only one tail in the inputs
2. Switch to filters from processors

Expected behavior
The pod could start as usual.

Your Environment

• Version used: 3.2.2
• Environment name and version (e.g. Kubernetes? What version?): CKS

[duj4]

Issue fixed after adding emitter_name to each multiline plugin.