protected String getFilePath(RemoteReplicaInfo remoteReplicaInfo, String fileName) {
    return String.join(File.separator, replicationConfig.backupCheckerReportDir,
        Long.toString(remoteReplicaInfo.getReplicaId().getPartitionId().getId()),
        remoteReplicaInfo.getReplicaId().getDataNodeId().getHostname(), fileName);
  }
Returns a concatenated file path
@param remoteReplicaInfo Info about remote replica
@param fileName Name of file to write text to
@return Returns a concatenated file path
ambry-replication/src/main/java/com/github/ambry/replication/BackupCheckerThread.java