Quash stack traces when ACLs are disabled

14/03/06 13:56:53 INFO ipc.Server: IPC Server handler 9 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.getAclStatus from 127.0.0.1:54988 Call#2 Retry#0: error: org.apache.hadoop.hdfs.protocol.AclException: The ACL operation has been rejected.  Support for ACLs has been disabled by setting dfs.namenode.acls.enabled to false.
org.apache.hadoop.hdfs.protocol.AclException: The ACL operation has been rejected.  Support for ACLs has been disabled by setting dfs.namenode.acls.enabled to false.
	at org.apache.hadoop.hdfs.server.namenode.AclConfigFlag.checkForApiCall(AclConfigFlag.java:50)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAclStatus(FSNamesystem.java:7666)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getAclStatus(NameNodeRpcServer.java:1341)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getAclStatus(ClientNamenodeProtocolServerSideTranslatorPB.java:1259)
	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1026)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1986)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1982)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1980)