Modified code to fix the issue of getting improper overlay data in downloaded csv file.
Modified code to fix the issue of getting improper overlay data in
downloaded csv file.

VoltDB/voltdb,migue/voltdb,simonzhangsm/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,migue/voltdb,migue/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,migue/voltdb,VoltDB/voltdb,migue/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,migue/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,deerwalk/voltdb,deerwalk/voltdb,migue/voltdb,VoltDB/voltdb,VoltDB/voltdb,migue/voltdb,deerwalk/voltdb