Use bucket_space metric in retirement

This makes the Cluster Controller use the
vds.datastored.bucket_space.buckets_total, dimension bucketSpace=default, to
determine whether a content node manages zero buckets, and if so, will allow
the node to go permanently down. This is used when a node is retiring, and it
is to be removed from the application.

The change is guarded by the use-bucket-space-metric, default true. If the new
metric doesn't work as expected, we can revert to using the current/old metric
by flipping the flag. The flag can be controlled per application.

1 files changed, 1 insertions, 0 deletions

diff --git a/clustercontroller-apps/src/main/java/com/yahoo/vespa/clustercontroller/apps/clustercontroller/ClusterControllerClusterConfigurer.java b/clustercontroller-apps/src/main/java/com/yahoo/vespa/clustercontroller/apps/clustercontroller/ClusterControllerClusterConfigurer.java
index c95d814eb99..bad1e526fba 100644
--- a/clustercontroller-apps/src/main/java/com/yahoo/vespa/clustercontroller/apps/clustercontroller/ClusterControllerClusterConfigurer.java
+++ b/clustercontroller-apps/src/main/java/com/yahoo/vespa/clustercontroller/apps/clustercontroller/ClusterControllerClusterConfigurer.java
@@ -76,6 +76,7 @@ public class ClusterControllerClusterConfigurer {
         options.clusterHasGlobalDocumentTypes = config.cluster_has_global_document_types();
         options.minMergeCompletionRatio = config.min_merge_completion_ratio();
         options.enableTwoPhaseClusterStateActivation = config.enable_two_phase_cluster_state_transitions();
+        options.determineBucketsFromBucketSpaceMetric = config.determine_buckets_from_bucket_space_metric();
     }
 
     private void configure(SlobroksConfig config) {