ENG-5707 Python client read buffer performance fix.
ENG-5707 Python client read buffer performance fix.

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