hive一直卡住不动，jps时ResourceManager 没启动

在使用hive时，遇到只要查询涉及到跑MR的时候，就会卡住不动；html 例如java hive> select id from db_hive.student; Total jobs = 1 Launching Job 1 out of 1 Number of reduce tasks is set to 0 since there's no reduce operator 就会卡住不动。这里通

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