Remove references to Guava Objects.toStringHelper

2017-09-20 16:10:42,897 [INFO] [main] |service.AbstractService|: Service org.apache.tez.dag.app.DAGAppMaster failed in state STARTED; cause: org.apache.hadoop.service.ServiceStateException: java.lang.NoSuchMethodError: com.google.common.base.Objects.toStringHelper(Ljava/lang/Object;)Lcom/google/common/base/Objects$ToStringHelper;
org.apache.hadoop.service.ServiceStateException: java.lang.NoSuchMethodError: com.google.common.base.Objects.toStringHelper(Ljava/lang/Object;)Lcom/google/common/base/Objects$ToStringHelper;
	at org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)
	at org.apache.tez.dag.app.DAGAppMaster.startServices(DAGAppMaster.java:1989)
	at org.apache.tez.dag.app.DAGAppMaster.serviceStart(DAGAppMaster.java:2056)
	at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
	at org.apache.tez.dag.app.DAGAppMaster$9.run(DAGAppMaster.java:2707)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1936)
	at org.apache.tez.dag.app.DAGAppMaster.initAndStartAppMaster(DAGAppMaster.java:2703)
	at org.apache.tez.dag.app.DAGAppMaster.main(DAGAppMaster.java:2508)
Caused by: java.lang.NoSuchMethodError: com.google.common.base.Objects.toStringHelper(Ljava/lang/Object;)Lcom/google/common/base/Objects$ToStringHelper;
	at org.apache.hadoop.metrics2.lib.MetricsRegistry.toString(MetricsRegistry.java:419)
	at java.lang.String.valueOf(String.java:2994)
	at java.lang.StringBuilder.append(StringBuilder.java:131)
	at org.apache.hadoop.ipc.metrics.RpcMetrics.<init>(RpcMetrics.java:74)
	at org.apache.hadoop.ipc.metrics.RpcMetrics.create(RpcMetrics.java:80)
	at org.apache.hadoop.ipc.Server.<init>(Server.java:2658)
	at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:968)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.<init>(ProtobufRpcEngine.java:367)
	at org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:342)
	at org.apache.hadoop.ipc.RPC$Builder.build(RPC.java:810)
	at org.apache.tez.dag.api.client.DAGClientServer.createServer(DAGClientServer.java:134)
	at org.apache.tez.dag.api.client.DAGClientServer.serviceStart(DAGClientServer.java:82)
	at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
	at org.apache.tez.dag.app.DAGAppMaster$ServiceWithDependency.start(DAGAppMaster.java:1909)
	at org.apache.tez.dag.app.DAGAppMaster$ServiceThread.run(DAGAppMaster.java:1930)
2017-09-20 16:10:42,898 [ERROR] [main] |rm.TaskSchedulerManager|: Failed to do a clean initiateStop for Scheduler: [0:TezYarn]