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chore: update readme with latest state of project
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Signed-off-by: Ion Koutsouris <[email protected]>
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@ion-elgreco
ion-elgreco committed Jan 12, 2025
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Expand Up @@ -143,6 +143,7 @@ of features outlined in the Delta [protocol][protocol] is also [tracked](#protoc
| Microsoft OneLake | ![done] | ![done] | |
| Google Cloud Storage | ![done] | ![done] | |
| HDFS | ![done] | ![done] | |
| LakeFS | ![done] | ![done] | Python: Rust engine writer only supported |

### Supported Operations

Expand All @@ -151,12 +152,19 @@ of features outlined in the Delta [protocol][protocol] is also [tracked](#protoc
| 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 |
| Update | ![done] | ![done] | Update values from a table |
| Add Column | ![done] | ![done] | Add new columns or nested fields |
| Add Feature | ![done] | ![done] | Enable delta table features |
| Add Constraints | ![done] | ![done] | Set delta constraints, to verify data on write |
| Drop Constraints | ![done] | ![done] | Removes delta constraints |
| Set Table Properties | ![done] | ![done] | Set delta table properties |
| Convert to Delta | ![done] | ![done] | Convert parquet table to delta table |
| FS check | ![done] | ![done] | Remove corrupted files from table |
| Restore | ![done] | ![done] | Restores table to previous version state |

### Protocol Support Level

Expand All @@ -166,17 +174,17 @@ of features outlined in the Delta [protocol][protocol] is also [tracked](#protoc
| 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 3 | CHECK constraints | [![done]][check-constraints] |
| Version 4 | Change Data Feed | ![done] |
| Version 4 | Generated Columns | |
| Version 5 | Column Mapping | |
| Version 6 | Identity Columns | |
| Version 7 | Table Features | |
| Version 7 | Table Features | ![done] |

| Reader Version | Requirement | Status |
| -------------- | ----------------------------------- | ------ |
| Version 2 | Column Mapping | |
| Version 3 | Table Features (requires reader V7) | |
| Reader Version | Requirement | Status |
| -------------- | ----------------------------------- | ------ |
| Version 2 | Column Mapping | |
| Version 3 | Table Features (requires reader V7) | ![done] |

[datafusion]: https://github.com/apache/arrow-datafusion
[ballista]: https://github.com/apache/arrow-ballista
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