NIFI Missing Flowfile content

2016-08-02 15:48:17,256 WARN [Timer-Driven Process Thread-3] o.a.n.c.r.WriteAheadFlowFileRepository Repository Record StandardRepositoryRecord[UpdateType=CONTENTMISSING,Record=Standard=StandardFlowFileRecord[uuid=<uuid>,claim=StandardContentClaim [resourceClaim=StandardResourceClaim[id=1470152700742-2,container=default,section=2],offset=0,length=5304610,offset=0,name=<filename>,size=5304610]] is marked to be aborted; it will be persisted in the FlowFileRepository as DELETE record
2016-08-02 15:48:17,258 ERROR [Site-to-Site Worker Thread-6338] o.a.nifi.remote.SocketRemoteSiteListener Unable to communicate with remote instance Peer[url=<nifi url>] (SocketFlow FileServerProtocol[CommsID=<ComsID>]) due to org.apache.nifi.processor.exception.ProcessException: org.apache.nifi.processor.exception.MissingFlowFileException: Unable to find content for FlowFile; closing connection.