awskinesisexporter: Add support for partitioning records by traceId

[preetsarb]

Component(s)

exporter/awskinesis

Is your feature request related to a problem? Please describe.

Currently spans of a single trace can be spread over multiple shards, so its not possible (or require peer forwarding of spans) to perform tail sampling when consuming data from kinesis.

Describe the solution you'd like

Kinesis supports partitioning of records. traceId can be used as the partitionKey so all spans are routed to the same shard.

Describe alternatives you've considered

No response

Additional context

Similar feature was added for kafka exporter: #12318

[github-actions]

Pinging code owners:

• exporter/awskinesis: @Aneurysm9 @MovieStoreGuy

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[jamesmoessis]

@preetsarb have you considered using layered collectors connected with load balancing exporter to shard by trace ID? Could be an option in your interim.

Another problem I foresee with this is the Kinesis limit of 1MB per second per shard. Traces can easily be over 1MB so it begs the question how can that limit be avoided at scale.