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docs: update comment about r2 requiring locks #2261

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docs: update comment about r2 requiring locks #2261

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64 changes: 32 additions & 32 deletions README.md
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Expand Up @@ -130,45 +130,45 @@ of features outlined in the Delta [protocol][protocol] is also [tracked](#protoc

### Cloud Integrations

| Storage | Rust | Python | Comment |
| -------------------- | :-----: | :-----: | ----------------------------------- |
| Local | ![done] | ![done] | |
| S3 - AWS | ![done] | ![done] | requires lock for concurrent writes |
| S3 - MinIO | ![done] | ![done] | requires lock for concurrent writes |
| S3 - R2 | ![done] | ![done] | requires lock for concurrent writes |
| Azure Blob | ![done] | ![done] | |
| Azure ADLS Gen2 | ![done] | ![done] | |
| Microsoft OneLake | ![done] | ![done] | |
| Google Cloud Storage | ![done] | ![done] | |
| Storage | Rust | Python | Comment |
| -------------------- | :-----: | :-----: | ---------------------------------------------------------------- |
| Local | ![done] | ![done] | |
| S3 - AWS | ![done] | ![done] | requires lock for concurrent writes |
| S3 - MinIO | ![done] | ![done] | requires lock for concurrent writes |
| S3 - R2 | ![done] | ![done] | No lock required when using `AmazonS3ConfigKey::CopyIfNotExists` |
| Azure Blob | ![done] | ![done] | |
| Azure ADLS Gen2 | ![done] | ![done] | |
| Microsoft OneLake | ![done] | ![done] | |
| Google Cloud Storage | ![done] | ![done] | |

### Supported Operations

| Operation | Rust | Python | Description |
| --------------------- | :----------------------: | :----------------------: | ------------------------------------------- |
| Create | ![done] | ![done] | Create a new table |
| Read | ![done] | ![done] | Read data from a table |
| Vacuum | ![done] | ![done] | Remove unused files and log entries |
| Delete - partitions | | ![done] | Delete a table partition |
| Delete - predicates | ![done] | ![done] | Delete data based on a predicate |
| Optimize - compaction | ![done] | ![done] | Harmonize the size of data file |
| Optimize - Z-order | ![done] | ![done] | Place similar data into the same file |
| Merge | ![done] | ![done] | Merge a target Delta table with source data |
| FS check | ![done] | ![done] | Remove corrupted files from table |
| Operation | Rust | Python | Description |
| --------------------- | :-----: | :-----: | ------------------------------------------- |
| Create | ![done] | ![done] | Create a new table |
| Read | ![done] | ![done] | Read data from a table |
| Vacuum | ![done] | ![done] | Remove unused files and log entries |
| Delete - partitions | | ![done] | Delete a table partition |
| Delete - predicates | ![done] | ![done] | Delete data based on a predicate |
| Optimize - compaction | ![done] | ![done] | Harmonize the size of data file |
| Optimize - Z-order | ![done] | ![done] | Place similar data into the same file |
| Merge | ![done] | ![done] | Merge a target Delta table with source data |
| FS check | ![done] | ![done] | Remove corrupted files from table |

### Protocol Support Level

| Writer Version | Requirement | Status |
| -------------- | --------------------------------------------- | :------------------: |
| Version 2 | Append Only Tables | ![done] |
| Version 2 | Column Invariants | ![done] |
| Version 3 | Enforce `delta.checkpoint.writeStatsAsJson` | [![open]][writer-rs] |
| Version 3 | Enforce `delta.checkpoint.writeStatsAsStruct` | [![open]][writer-rs] |
| Writer Version | Requirement | Status |
| -------------- | --------------------------------------------- | :-------------------------------: |
| Version 2 | Append Only Tables | ![done] |
| Version 2 | Column Invariants | ![done] |
| Version 3 | Enforce `delta.checkpoint.writeStatsAsJson` | [![open]][writer-rs] |
| Version 3 | Enforce `delta.checkpoint.writeStatsAsStruct` | [![open]][writer-rs] |
| Version 3 | CHECK constraints | [![semi-done]][check-constraints] |
| Version 4 | Change Data Feed | |
| Version 4 | Generated Columns | |
| Version 5 | Column Mapping | |
| Version 6 | Identity Columns | |
| Version 7 | Table Features | |
| Version 4 | Change Data Feed | |
| Version 4 | Generated Columns | |
| Version 5 | Column Mapping | |
| Version 6 | Identity Columns | |
| Version 7 | Table Features | |

| Reader Version | Requirement | Status |
| -------------- | ----------------------------------- | ------ |
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