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Rationale for this change
FsspecFileIOpasses the GCS token to gcsfs without its expiry. gcsfs 2026.2.0 and later then look up the expiry at tokeninfo, which fails for down-scoped tokens that REST catalogs vend. Reads fail withProvided token is either not valid, or expired.A token with
gcs.oauth2.token-expires-atnow goes to gcsfs asgoogle.oauth2.credentials.Credentialswith that expiry.Are these changes tested?
Yes, with unit tests and against a REST catalog that vends down-scoped GCS tokens.
Are there any user-facing changes?
Yes. Vended GCS credentials work again with gcsfs 2026.2.0 and later.