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09-14-2016
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Title | Views | Posted |
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5382 | 08-01-2017 08:04 AM |
08-10-2017
04:24 PM
Hi, I have some queries are slow in impala (such as min/max), if I post the profile here, can someone help pointing out some the issues? Thanks Shannon
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Apache Impala
08-01-2017
08:04 AM
Thanks i was doing something for short term, worked.
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07-28-2017
03:30 PM
Hi Is it possible to have two external tables point to the same hdfs location? Thanks Shannon
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Apache Hive
07-25-2017
12:42 PM
Hi, If i create index in hive, does it help running queries in impala? Thanks Shannon
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Apache Hive
07-20-2017
02:26 PM
Hi, I have this very weird issue, using sqoop to pulling data from oracle to hdfs/hive, i have three jobs running, total records is 312,163,901, but it stops at 312,160,000, the jobs show as running, but it hangs and nohting in the log and no update. A different table works fine. To me somehow the last 3901 got stuck, can someone help or give some hints? Thanks Shannon
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Apache Sqoop
06-19-2017
07:52 AM
Thanks. I have a related question, how does hdfs/impala know that one of the fields/columns is used as the partition? Shannon
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06-13-2017
02:39 PM
Thanks. Sorry i was not clear when i said diffference, i meant is there any performance difference?
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06-13-2017
12:53 PM
Is it possible to get array data by position? If B is an array under A, can i do something like select B[0].value, B[1].value from A Thanks Shannon
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Apache Impala