[exporter/elasticsearch] Attributes are mutated in data stream routing

[carsonip]

Component(s)

exporter/elasticsearch

What happened?

Description

Attributes are mutated for data stream routing when *_dynamic_index is enabled. It does not pose a problem to es exporter itself, but may be problematic if the same event is sent to other exporters. Ideally es exporter should operate on a copy of the attribute map so that it does not mutate the original event.

Need to confirm if this is an actual issue.

Steps to Reproduce

Expected Result

Actual Result

Collector version

v0.108.0

Environment information

Environment

OS: (e.g., "Ubuntu 20.04")
Compiler(if manually compiled): (e.g., "go 14.2")

OpenTelemetry Collector configuration

No response

Log output

No response

Additional context

No response

[github-actions]

Pinging code owners:

• exporter/elasticsearch: @JaredTan95 @ycombinator @carsonip

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[carsonip]

Closing as this is a non-issue according to OpenTelemetry collector architecture docs:

Pipelines can have one or more receivers. Data from all receivers is pushed to the first processor, which processes the data and then pushes it to the next processor. A processor might also drop the data if it’s sampling or filtering. This continues until the last processor in the pipeline pushes the data to the exporters. Each exporter gets a copy of each data element. The last processor uses a fanoutconsumer to send the data to multiple exporters.