發出的警告:Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.
原因:yarn沒有啟動,或者已經停止運作
解決方法:先關掉所有的行程,重新運行hdfs和yarn(start-all.sh或者start-dfs.sh start-yarn.sh)

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