[hotfix] respect default local number of task managers

flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionGraph.java

@@ -1074,7 +1074,7 @@ public class ExecutionGraph implements Serializable {
 				LOG.warn("Received accumulator result for unknown execution {}.", execID);
 			}
 		} catch (Exception e) {
-			LOG.error("Cannot update accumulators for job " + jobID, e);
+			LOG.error("Cannot update accumulators for job {}.", jobID, e);
 		}
 	}
 

flink-runtime/src/main/scala/org/apache/flink/runtime/minicluster/LocalFlinkMiniCluster.scala

@@ -158,7 +158,8 @@ class LocalFlinkMiniCluster(
         ConfigConstants.DEFAULT_TASK_MANAGER_NETWORK_NUM_BUFFERS) * bufferSize.toLong
 
       val numTaskManager = config.getInteger(
-        ConfigConstants.LOCAL_NUMBER_TASK_MANAGER, 1)
+        ConfigConstants.LOCAL_NUMBER_TASK_MANAGER,
+        ConfigConstants.DEFAULT_LOCAL_NUMBER_TASK_MANAGER)
 
       val memoryFraction = config.getFloat(
         ConfigConstants.TASK_MANAGER_MEMORY_FRACTION_KEY,
@@ -184,7 +185,8 @@ class LocalFlinkMiniCluster(
 
     config.setString(ConfigConstants.JOB_MANAGER_IPC_ADDRESS_KEY, hostname)
 
-    config.setInteger(ConfigConstants.LOCAL_NUMBER_TASK_MANAGER, 1)
+    config.setInteger(ConfigConstants.LOCAL_NUMBER_TASK_MANAGER,
+      ConfigConstants.DEFAULT_LOCAL_NUMBER_TASK_MANAGER)
 
     // Reduce number of threads for local execution
     config.setInteger(NettyConfig.NUM_THREADS_CLIENT, 1)