SLING-6020 : reduce 'No Descriptor value available' log error down to log warn

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1758629 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/sling/discovery/oak/cluster/OakClusterViewService.java b/src/main/java/org/apache/sling/discovery/oak/cluster/OakClusterViewService.java
index ee082f9..340518e 100644
--- a/src/main/java/org/apache/sling/discovery/oak/cluster/OakClusterViewService.java
+++ b/src/main/java/org/apache/sling/discovery/oak/cluster/OakClusterViewService.java
@@ -120,7 +120,11 @@
             logger.info("getLocalClusterView: undefined clusterView: "+e.getReason()+" - "+e.getMessage());
             throw e;
         } catch (Exception e) {
-            logger.error("getLocalClusterView: repository exception: "+e, e);
+            if (e.getMessage() != null && e.getMessage().contains("No Descriptor value available")) {
+                logger.warn("getLocalClusterView: repository exception: "+e);
+            } else {
+                logger.error("getLocalClusterView: repository exception: "+e, e);
+            }
             throw new UndefinedClusterViewException(Reason.REPOSITORY_EXCEPTION, "Exception while processing descriptor: "+e);
         } finally {
             logger.trace("getLocalClusterView: end");