RBF: rollEdit() command fails with Router

bin> ./hdfs dfsadmin -rollEdits
rollEdits: Cannot cast java.lang.Long to long
bin>

org.apache.hadoop.ipc.RemoteException(java.lang.ClassCastException): Cannot cast java.lang.Long to long
        at java.lang.Class.cast(Class.java:3369)
        at org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeConcurrent(RouterRpcClient.java:1085)
        at org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeConcurrent(RouterRpcClient.java:982)
        at org.apache.hadoop.hdfs.server.federation.router.RouterClientProtocol.rollEdits(RouterClientProtocol.java:900)
        at org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.rollEdits(RouterRpcServer.java:862)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.rollEdits(ClientNamenodeProtocolServerSideTranslatorPB.java:899)
        at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:878)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:824)
        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:1729)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2684)

        at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1520)
        at org.apache.hadoop.ipc.Client.call(Client.java:1466)
        at org.apache.hadoop.ipc.Client.call(Client.java:1376)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
        at com.sun.proxy.$Proxy11.rollEdits(Unknown Source)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.rollEdits(ClientNamenodeProtocolTranslatorPB.java:804)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422)
        at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165)
        at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157)
        at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359)
        at com.sun.proxy.$Proxy12.rollEdits(Unknown Source)
        at org.apache.hadoop.hdfs.DFSClient.rollEdits(DFSClient.java:2350)
        at org.apache.hadoop.hdfs.DistributedFileSystem.rollEdits(DistributedFileSystem.java:1550)
        at org.apache.hadoop.hdfs.tools.DFSAdmin.rollEdits(DFSAdmin.java:850)
        at org.apache.hadoop.hdfs.tools.DFSAdmin.run(DFSAdmin.java:2353)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
        at org.apache.hadoop.hdfs.tools.DFSAdmin.main(DFSAdmin.java:2568)