YoannAbriel opened a new pull request, #63246:
URL: https://github.com/apache/airflow/pull/63246
## Problem
`OSSRemoteLogIO.upload()` passes a full OSS URI to `oss_write()`, which
internally prepends `base_folder` again. This produces malformed keys like
`prefix/logs/oss://bucket/prefix/logs/dag_id=.../attempt=1.log`, making logs
unreadable from the Airflow UI.
## Root Cause
`upload()` joins `self.remote_base` (the full `oss://bucket/prefix` URI)
with the relative path, then passes the result to `oss_write()`. But
`oss_write()` already prepends `self.base_folder` (extracted from
`remote_base`), so the prefix gets doubled.
## Fix
Pass only the relative path (relative to `base_log_folder`) to `oss_write()`
instead of the full OSS URI. Added a test to verify both absolute and relative
input paths produce the correct relative argument to `oss_write()`.
Closes: #63242
<!-- SPDX-License-Identifier: Apache-2.0
https://www.apache.org/licenses/LICENSE-2.0 -->
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##### Was generative AI tooling used to co-author this PR?
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