Add equals and hashCode functions for NodeSchema to check equal schema of receive plan node and send plan node
Add equals and hashCode functions for NodeSchema to check equal schema of receive plan node and send plan node

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