spark遇到的一些问题及其解决办法
1. ERROR org.apache.spark.storage.DiskBlockObjectWriter: Uncaught exception while reverting partial writes to file /home/work/hdd9/yarn/ttttt-hadoop/nodemanager/usercache/s_sales/appcache/application_1597370851926_759263/blockmgr-7aa07b85-2ee1-4b1b-9
