use BeforeClass, AfterClass to improve test executing speed
use BeforeClass, AfterClass to improve test executing speed

marstianna/spark,stylismo/spark,universsky/spark-1,sebastian1118/spark,PYangDizzle/Spark,despegar/spark,perwendel/spark,sebastian1118/spark,jacek99/spark,gimlet2/spark,jacek99/spark,heuermh/spark-1,opsonsy/spark,greyheart/spark,nkhuyu/spark-1,hendrosteven/spark,martylamb/spark,seetharamireddy540/spark,stylismo/spark,hendrosteven/spark,rokusr/spark,micsta/spark,gimlet2/spark,arekkw/spark,greyheart/spark,MouettE-SC/spark,heuermh/spark-1,nkhuyu/spark-1,borud/spark,gimlet2/spark,nacx/spark,jabgibson/spark,xdcrafts/spark,MouettE-SC/spark,jabgibson/spark,seetharamireddy540/spark,borud/spark,Ariel-Isaacm/spark,northcapen/spark,ganger85/spark,rokusr/spark,alexlondon07/spark,arekkw/spark,despegar/spark,micsta/spark,tempbottle/spark-1,PYangDizzle/Spark,micsta/spark,gimlet2/spark,guilhermehbueno/spark,guicamest/spark,stylismo/spark,guicamest/spark,rokusr/spark,perwendel/spark,nacx/spark,zeroflag/spark,stylismo/spark,mugizico/spark,alexlondon07/spark,gutobortolozzo/spark,perwendel/spark,xdcrafts/spark,Tradunsky/spark,mugizico/spark,Ariel-Isaacm/spark,zeroflag/spark,ztx1491/spark,Tradunsky/spark,ztx1491/spark,northcapen/spark,gutobortolozzo/spark,opsonsy/spark,MouettE-SC/spark,ganger85/spark,martylamb/spark,universsky/spark-1,guilhermehbueno/spark,marstianna/spark,tempbottle/spark-1