address Paul's comment, check the size of index before and after deletion
address Paul's comment, check the size of index before and after deletion

ingted/voltdb,wolffcm/voltdb,wolffcm/voltdb,flybird119/voltdb,creative-quant/voltdb,paulmartel/voltdb,VoltDB/voltdb,ingted/voltdb,paulmartel/voltdb,zuowang/voltdb,simonzhangsm/voltdb,creative-quant/voltdb,kumarrus/voltdb,deerwalk/voltdb,kumarrus/voltdb,kumarrus/voltdb,VoltDB/voltdb,VoltDB/voltdb,paulmartel/voltdb,zuowang/voltdb,paulmartel/voltdb,deerwalk/voltdb,ingted/voltdb,simonzhangsm/voltdb,wolffcm/voltdb,kumarrus/voltdb,zuowang/voltdb,VoltDB/voltdb,migue/voltdb,kumarrus/voltdb,kumarrus/voltdb,simonzhangsm/voltdb,ingted/voltdb,migue/voltdb,flybird119/voltdb,VoltDB/voltdb,simonzhangsm/voltdb,deerwalk/voltdb,paulmartel/voltdb,simonzhangsm/voltdb,kumarrus/voltdb,paulmartel/voltdb,zuowang/voltdb,simonzhangsm/voltdb,deerwalk/voltdb,paulmartel/voltdb,zuowang/voltdb,simonzhangsm/voltdb,creative-quant/voltdb,creative-quant/voltdb,wolffcm/voltdb,VoltDB/voltdb,flybird119/voltdb,creative-quant/voltdb,flybird119/voltdb,ingted/voltdb,flybird119/voltdb,ingted/voltdb,flybird119/voltdb,ingted/voltdb,flybird119/voltdb,migue/voltdb,migue/voltdb,wolffcm/voltdb,migue/voltdb,simonzhangsm/voltdb,wolffcm/voltdb,zuowang/voltdb,deerwalk/voltdb,creative-quant/voltdb,migue/voltdb,VoltDB/voltdb,wolffcm/voltdb,zuowang/voltdb,migue/voltdb,paulmartel/voltdb,kumarrus/voltdb,creative-quant/voltdb,migue/voltdb,creative-quant/voltdb,deerwalk/voltdb,flybird119/voltdb,deerwalk/voltdb,wolffcm/voltdb,deerwalk/voltdb,ingted/voltdb,zuowang/voltdb