Error: Error while processing statement: FAILED: Execution Error, return code 2 from org.apache.hado

1.解決步驟：打開 /tmp/root/hive.log查看日誌，沒有發現什麼有用的 2.開啓mapereduce 的histroy;  $sbin/mr_jobhistory_daemon.sh start historyserver 3.從jobhistory/job/job_1526113286554_0004的 Diagnostics: REDUCE capability required

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