RussellSpitzer commented on code in PR #12115: URL: https://github.com/apache/iceberg/pull/12115#discussion_r1934566388
########## docs/docs/spark-procedures.md: ########## @@ -972,4 +972,91 @@ CALL catalog_name.system.compute_table_stats(table => 'my_table', snapshot_id => Collect statistics of the snapshot with id `snap1` of table `my_table` for columns `col1` and `col2` ```sql CALL catalog_name.system.compute_table_stats(table => 'my_table', snapshot_id => 'snap1', columns => array('col1', 'col2')); -``` \ No newline at end of file +``` + +## Table Replication + +The `rewrite-table-path` assists in moving or copying an Iceberg table from one location to another. + +### `rewrite-table-path` + +This procedure writes a new copy of the Iceberg table's files where every path has had its prefix replaced. +The newly rewritten metadata files, along with data files, enable moving or coping an Iceberg table to a new location. +After copying both metadata and data to the desired location, the replicated iceberg +table will appear identical to the source table, including snapshot history, schema and partition specs. + +!!! info + This procedure only creates metadata for an existing Iceberg table modified for a new location. Procedure results can be consumed for copying the files. + Copying/Moving metadata and data files to the new location is not part of this procedure. + + +| Argument Name | Required? | default | Type | Description | +|--------------------|-----------|------------------------------------------------|--------|-------------------------------------------------------------------------| +| `table` | ✔️ | | string | Name of the table | +| `source_prefix` | ✔️ | | string | The existing prefix to be replaced | +| `target_prefix` | ✔️ | | string | The replacement prefix for `source_prefix` | +| `start_version` | | first metadata.json in table's metadata log | string | The name or path to the chronologically first metadata.json to rewrite. | +| `end_version` | | latest metadata.json | string | The name or path to the chronologically last metadata.json to rewrite | +| `staging_location` | | new directory under table's metadata directory | string | The output location for newly modified metadata files | + + +#### Modes of operation: + +- Full Rewrite: + +By default, the procedure operates in full rewrite mode, rewriting every Iceberg table file containing a path reference. This includes metadata.json, manifest lists, manifests, and position delete files. Review Comment: ```suggestion By default, the procedure operates in full rewrite mode, rewriting all reachable metadata files. This includes metadata.json, manifest lists, manifests, and position delete files. ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org