2.8->2.10 version，start pulsar show exception：org.apache.pulsar.broker.web.RestException: Cluster already exists

[startjava]

future version fix，thank you

[RobertIndie]

Could you provide the broker log and other related information if possible?

[github-actions]

The issue had no activity for 30 days, mark with Stale label.

[leizhiyuan]

it is because

 public void getClusters(@Suspended AsyncResponse asyncResponse) {
        clusterResources().listAsync()
                .thenApply(clusters -> clusters.stream()
                        // Remove "global" cluster from returned list
                        .filter(cluster -> !Constants.GLOBAL_CLUSTER.equals(cluster))
                        .collect(Collectors.toSet()))
                .thenAccept(asyncResponse::resume)
                .exceptionally(ex -> {
                    log.error("[{}] Failed to get clusters {}", clientAppId(), ex);
                    resumeAsyncResponseExceptionally(asyncResponse, ex);
                    return null;
                });
    }

but

org.apache.pulsar.PulsarStandalone#createSampleNameSpace

    // Create marker for "global" cluster
            if (!clusters.contains(globalCluster)) {
                admin.clusters().createCluster(globalCluster, ClusterData.builder().build());
            }

can not know global has exists

[leizhiyuan]

ab2e6a8

this pr seems fixed this.

[github-actions]

The issue had no activity for 30 days, mark with Stale label.

[gvanyao]

why remove the global cluster?