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Hive, mail # user - how to know a hive query failed

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how to know a hive query failed
kentkong_work 2013-07-17, 02:42
    I use a shell script to run hive query in background, like this
    hive -e "select uname, age from usertable" >> result.csv &

    sometimes, the hive query failed, but I can't find.
    only thing I can do is waiting for long time, 5 or 6 hours, if I still can't see the result.csv, I know the query failed.
    is there some way to let hive tell me the query failed?