Fix a exit bug and latency bug
Fix a exit bug and latency bug

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