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[HIVE-1400] CombineHiveInputFormat does not set "columns needed" property - Hive - [issue]
...When i was testing a job, i found it seems CombineHiveInputFormat did not pass columns needed to the underlying reader....
http://issues.apache.org/jira/browse/HIVE-1400    Author: He Yongqiang, 2010-06-10, 22:42
[HIVE-1044] Data output order is incorrect for map join - Hive - [issue]
...For query:select /* + mapjoin(a, c) * /  *  from T1 a join T12 b join T1 c on a.key = b.key and b.key = c.key;The output data order is b.*  a.*  c.*It should be  a.*...
http://issues.apache.org/jira/browse/HIVE-1044    Author: He Yongqiang, 2010-01-12, 06:18
Re: Indexing in hive - Hive - [mail # user]
...After "create index" command, you can use "update index index_name", index actually is a table itself. So you can see its contents and do other normal table operations.  Thanks, Yongqia...
   Author: He Yongqiang, 2009-09-21, 10:50
Re: Files does not exist error: concurrency control on hive queries... - Hive - [mail # user]
...Hi Eva,    After a close at the code, I think this is not a bug. We need to find ou t how to avoid this.   Thanks, Yongqiang On 09-9-9 下午1:31, "He Yongqiang"  wrote: &nbs...
   Author: He Yongqiang, 2009-09-09, 11:07
Re: CFP of 3rd Hadoop in China event (Hadoop World:Beijing) - Hive - [mail # user]
...Hi all,      The 3rd Hadoop in China event (Hadoop World:Beijing 2009) is open for registration now.              http://hadoop-world-beijin...
   Author: He Yongqiang, 2009-09-02, 01:03
[HIVE-781] Integrate Zebra with Hive - Hive - [issue]
...This is raised for my research....
http://issues.apache.org/jira/browse/HIVE-781    Author: He Yongqiang, 2009-08-21, 07:10
[HIVE-735] Queries should be optimized with pre-ordered column - Hive - [issue]
...If a table has one or some pre-ordered columns and a query has filters(range/point) on these columns. Hive should take advantage of the order information, and only read the needed blocks ins...
http://issues.apache.org/jira/browse/HIVE-735    Author: He Yongqiang, 2009-08-07, 14:38
Re: Does Hive support HBase (like) column based storage? - Hive - [mail # user]
...Y, hive support column-based storage. RCFile. You can create a table using command like : Create table tbl(cols) .... stored as RCFile to try Hive's column storage.  Right now, Hive doe...
   Author: He Yongqiang, 2009-08-04, 14:13
Re: UPDATE statement in Hive? - Hive - [mail # user]
...Talked with Samuel Guo, and I am sure he will work on it soon.  On 09-7-29 上午10:15, "Ashish Thusoo"  wrote:  ...
   Author: He Yongqiang, 2009-07-29, 03:50
Re: Creating a UDF (was Hive SerDe?) - Hive - [mail # user]
...Did you run ‘add jar path_to_the-jar-including-your-udfclass’ first before you issue ‘CREATE TEMPORARY FUNCTION’; The actual mapper and reducer are run in the hadoop cluster, and hive’s “add...
   Author: He Yongqiang, 2009-07-16, 11:39
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