For anyone else stumbling across this answer - "poolsize=1 bytes" is consistent with the license Splunk Cloud provides for Heavy Forwarder, Deployment Server, and Hybrid Search hosts. In that scenario, no indexing should be occurring locally and any single event being indexed will trigger this license warning.
To avoid this particular Splunk Cloud scenario, ensure your hosts are setup to forward data to Splunk Cloud, so there is no chance of local indexing occurring. If you do end up in violation, request a license reset key from Splunk Support.
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