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This was referenced Sep 28, 2026
REST catalog requests went out without a User-Agent. They now send Paimon's unified User-Agent format, module(transport;features) extended, by default paimon-rust/<version>(reqwest). The parts come from the catalog options user-agent.module, user-agent.features and user-agent.extended, which object storage requests share. A user-set header.User-Agent option still takes precedence and is the only User-Agent sent. The DLF ECS token client sends the default.
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Purpose
REST catalog requests from paimon-rust carry no
User-Agent, since reqwest sets none by default, so these clients can't be attributed in the catalog server's request logs.REST requests now carry Paimon's unified User-Agent format,
<module>(<transport>[;<feature>...])[ <extended>], the one object storage requests adopt as well (#991).Brief change log
paimon-rust/<version>(reqwest), built from the catalog optionsuser-agent.module,user-agent.featuresanduser-agent.extended, which object storage requests read too. The version is a compile-time constant.header.User-Agentoption still takes precedence and is the only User-Agent sent.Examples:
paimon-rust/0.4.0(reqwest)user-agent.features=Flink,user-agent.extended=vvrpaimon-rust/0.4.0(reqwest;Flink) vvrheader.User-Agent=starrocks/userstarrocks/userRelated: #991 (object storage User-Agent), apache/paimon#10308 (Java REST), apache/paimon#10309 (Python REST).
Tests
api::unit tests: new cases on a local HTTP endpoint for the default, the new options and theheader.User-Agentoverride; 92 passed, plusrest_api_test(45) andrest_catalog_test(79). Also checked on a live DLF REST catalog: its request log shows the configured features and extended part.cargo fmt --all -- --checkandcargo clippy --locked --all-targets --workspace --features fulltext,vortex -- -D warnings.API and Format
No.
Documentation
No.