Merge pull request #668 from gjmwoods/4.0-modify-logging-level

reduce logging of routing table refreshing

Author: zhenlineo

driver/src/main/java/org/neo4j/driver/internal/cluster/RoutingTableHandler.java

@@ -78,7 +78,7 @@ synchronized CompletionStage<RoutingTable> refreshRoutingTable( ConnectionContex
         else if ( routingTable.isStaleFor( context.mode() ) )
         {
             // existing routing table is not fresh and should be updated
-            log.info( "Routing table for database '%s' is stale. %s", databaseName.description(), routingTable );
+            log.debug( "Routing table for database '%s' is stale. %s", databaseName.description(), routingTable );
 
             CompletableFuture<RoutingTable> resultFuture = new CompletableFuture<>();
             refreshRoutingTableFuture = resultFuture;
@@ -114,7 +114,7 @@ private synchronized void freshClusterCompositionFetched( ClusterComposition com
             routingTableRegistry.removeAged();
             connectionPool.retainAll( routingTableRegistry.allServers() );
 
-            log.info( "Updated routing table for database '%s'. %s", databaseName.description(), routingTable );
+            log.debug( "Updated routing table for database '%s'. %s", databaseName.description(), routingTable );
 
             CompletableFuture<RoutingTable> routingTableFuture = refreshRoutingTableFuture;
             refreshRoutingTableFuture = null;