feat: Add Tencent Cloud COS (cosn://, cos://) FileIO support (#3239)#3242
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acake88 wants to merge 1 commit intoapache:mainfrom
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feat: Add Tencent Cloud COS (cosn://, cos://) FileIO support (#3239)#3242acake88 wants to merge 1 commit intoapache:mainfrom
acake88 wants to merge 1 commit intoapache:mainfrom
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Rationale for this change
Tencent Cloud Object Storage (COS) is one of the major object storage services in China, widely used in big data workloads with Spark, Flink, and Hive. Hadoop already supports
cosn://scheme natively via hadoop-cos, but PyIceberg currently has no COS support — users cannot access Iceberg tables stored on COS from Python.This PR adds COS as a storage backend via the fsspec-compatible
cosfslibrary, following the exact same pattern as existing integrations (S3 vias3fs, Azure viaadlfs, GCS viagcsfs, HuggingFace viahuggingface-hub).Changes:
pyiceberg/io/__init__.py: Added 5 COS configuration properties (cos.secret-id,cos.secret-key,cos.session-token,cos.region,cos.endpoint) and registeredcosn:///cos://schemes inSCHEMA_TO_FILE_IOpyiceberg/io/fsspec.py: Added_cosn()factory function and registeredcosn/cosinSCHEME_TO_FSpyproject.toml: Addedcosfs>=2026.3.25as an optional dependencyRationale for this change
Tencent Cloud Object Storage (COS) is one of the major object storage services in China, widely used in big data workloads with Spark, Flink, and Hive. Hadoop already supports cosn:// scheme natively via hadoop-cos, but PyIceberg currently has no COS support — users cannot access Iceberg tables stored on COS from Python.
This PR adds COS as a storage backend via the fsspec-compatible cosfs library, following the exact same pattern as existing integrations (S3 via s3fs, Azure via adlfs, GCS via gcsfs, HuggingFace via huggingface-hub).