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[expand - 6 more] - Re: Regression in trunk? (RE: Insert overwrite error using hive trunk) - Hive - [mail # user]
...It's mostly like because of missing patches for CombineFileInputFormat from  Hadoop. Can you try what Amareshwari suggested (adding HIVE-5759 patch) or  try hadoop 0.20.2 (which co...
   Author: Ning Zhang, 2010-09-28, 20:43
Re: Logging level - Hive - [mail # user]
...hive -hiveconf hive.root.logger=DEBUG,DRFA  On Sep 25, 2010, at 11:27 PM, Steven Wong wrote:  How can I control the logging level of Hive code that runs in the mappers/r educers? F...
   Author: Ning Zhang, 2010-09-26, 06:44
Re: insert data into a column of complex type - Hive - [mail # user]
...Ping, you cannot insert complex type column by manually input the data.  You'll need to have the complex typed data stored in some file first  (e.g., using Thrift serialization or ...
   Author: Ning Zhang, 2010-09-24, 17:10
Re: Hadoop/Hive observations - Hive - [mail # user]
...Hi Paul,  You are right in the sense that Hive and Hadoop are not optimized for  response time and emphasize more on scalability (on large data set and  clusters). It's also t...
   Author: Ning Zhang, 2010-09-14, 07:41
[expand - 1 more] - Re: ODBC isql error while testing - Hive - [mail # user]
...Something you can check out are:   - Did you compiled and deployed your code in different environment  (Linux/C compier version)? If so there might incompatibility issues in  ...
   Author: Ning Zhang, 2010-09-07, 21:05
Re: Which patch to apply out of multiple available ? - Hive - [mail # user]
...HIVE-1019 is still open and the last patch (from me) has conflict with  the design pointed by Zheng's review and is incompatible with the latest  trunk. Recently HIVE-1524 has been...
   Author: Ning Zhang, 2010-09-07, 18:39
Re: HIVE-1510 causing partToPartitionInfo IOException with CombinedHiveInputFormat - Hive - [mail # user]
...This is may be a bug in HIVE-1510. Can you file a JIRA and post the  message there?   On Sep 1, 2010, at 4:33 PM, Sammy Yu wrote:  CombinedHiveInputFormat: hive.input.format=o...
   Author: Ning Zhang, 2010-09-02, 00:16
Re: 'hive.merge.mapfiles' is broken in trunk - Hive - [mail # user]
...I think it is because CDH does not support CombineFileInputFormat (or  incompatible with Hadoop 0.20.2). If you want to merge, you can set  hive.mergejob.maponly=false, then it wil...
   Author: Ning Zhang, 2010-08-31, 02:36
[HIVE-1602] List Partitioning - Hive - [issue]
...Dynamic partition inserts create partitions bases on the dynamic partition column values. Currently it creates one partition for each distinct DP column value. This could result in skews in ...
http://issues.apache.org/jira/browse/HIVE-1602    Author: Ning Zhang, 2010-08-27, 23:25
Re: Multi Table Inserts produces multiple jobs - Hive - [mail # user]
...Multi table insert sometimes can combine queries in one MR job but since yo u have a group by for each subquery you will need 2 MR jobs.  One thing you may optimize is to set hive.exec....
   Author: Ning Zhang, 2010-08-24, 17:00
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