adutra commented on code in PR #8857: URL: https://github.com/apache/iceberg/pull/8857#discussion_r1364483076
########## nessie/src/main/java/org/apache/iceberg/nessie/NessieIcebergClient.java: ########## @@ -181,23 +183,65 @@ public IcebergTable table(TableIdentifier tableIdentifier) { } public void createNamespace(Namespace namespace, Map<String, String> metadata) { + getRef().checkMutable(); + + if (namespace.isEmpty()) { + throw new IllegalArgumentException("Creating empty namespaces is not supported"); + } + try { - getRef().checkMutable(); - withReference( - getApi() - .createNamespace() - .namespace(org.projectnessie.model.Namespace.of(namespace.levels())) - .properties(metadata)) - .create(); - refresh(); - } catch (NessieNamespaceAlreadyExistsException e) { - throw new AlreadyExistsException(e, "Namespace already exists: %s", namespace); - } catch (NessieNotFoundException e) { + org.projectnessie.model.Namespace content = + org.projectnessie.model.Namespace.of(metadata, namespace.levels()); + ContentKey key = content.toContentKey(); + + CommitMultipleOperationsBuilder commitBuilder = + api.commitMultipleOperations() + .commitMeta(NessieUtil.buildCommitMetadata("create namespace " + key, catalogOptions)) + .operation(Operation.Put.of(key, content)); + + Tasks.foreach(commitBuilder) + .retry(5) + // conflict can be thrown when parent namespace doesn't exist; + // bad request can be thrown when namespace already exists. + .stopRetryOn( + NessieNotFoundException.class, + NessieConflictException.class, + NessieBadRequestException.class) + .throwFailureWhenFinished() + .onFailure((o, exception) -> refresh()) + .run( + b -> { + Branch branch = b.branch((Branch) getRef().getReference()).commit(); + getRef().updateReference(branch); Review Comment: I added a few more test cases and I believe it's better to update the reference when the commit succeeds. This reduces the likelihood of future conflicts by keeping the HEAD of the reference up-to-date. -- 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