ajantha-bhat commented on code in PR #5718:
URL: https://github.com/apache/iceberg/pull/5718#discussion_r965846493
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nessie/src/main/java/org/apache/iceberg/nessie/NessieTableOperations.java:
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@@ -84,6 +85,12 @@ private TableMetadata loadTableMetadata(String
metadataLocation, Reference refer
NessieUtil.tableMetadataFromIcebergTable(io(), table,
metadataLocation);
Map<String, String> newProperties =
Maps.newHashMap(deserialized.properties());
newProperties.put(NESSIE_COMMIT_ID_PROPERTY, reference.getHash());
+ // To prevent accidental deletion of files that are still referenced by
other branches/tags,
+ // setting GC_ENABLED to false. So that all Iceberg's gc operations like
expire_snapshots,
+ // remove_orphan_files, drop_table with purge will fail with an error.
+ // Nessie CLI will provide a reference aware GC functionality for the
expired/unreferenced
+ // files.
+ newProperties.put(TableProperties.GC_ENABLED, "false");
Review Comment:
As mentioned in the description, we can't use the Iceberg GC code on
Nessie-managed tables (as they are not reference aware). Hence, completely
blocking it.
Nessie will provide its own implementation for GC.
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