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Re: merging the size of the reduce output - Hive - [mail # user]
...I think there is another parameter ³hive.merge.smallfiles.avgsize²  to see whether to do the merge job or not based on the average output files¹ size. The default for that parameter is ...
   Author: Yongqiang He, 2010-06-14, 05:55
[expand - 1 more] - Re: Converting types from java HashMap, Long and Array to BytesWritable for RCFileOutputFormat - Hive - [mail # user]
...Please see inline comment. please correct me if I am wrong about the serde layer.  Thanks Yongqiang On 6/9/10 11:24 PM, "Viraj Bhat"  wrote:   I think you do not need to write...
   Author: Yongqiang He, 2010-06-10, 07:23
Re: How to apply RDBMS table updates and deletes into Hadoop - Hive - [mail # user]
...Hi,  I think hive¹s join + transform could be helpful here.  Thanks Yongqiang On 6/8/10 3:58 PM, "Aaron Kimball"  wrote:  e of sed of ted  by e new  (and d at w...
   Author: Yongqiang He, 2010-06-08, 23:09
Re: Distinct errors - Hive - [mail # user]
...This error often occurs when you are running job in local mode. If you see this error, you can first do a ³set hive.exec.scratchdir=/tmp/create_this_dir_first;².  Thanks Yongqiang On 2/...
   Author: Yongqiang He, 2010-03-25, 16:58
Re: Hive join strategy documentation? - Hive - [mail # user]
...Hi, Thanks. Good suggestion.  Had a short discussion this afternoon. I will update the wiki once the sort merge bucket map join and another skew join done. And will send out an update i...
   Author: Yongqiang He, 2010-02-26, 03:53
Re: Having trouble with lateral view - Hive - [mail # user]
...Hi Jason,  This is a known bug, see https://issues.apache.org/jira/browse/HIVE-1056  You can first disable ppd with ³set hive.optimize.ppd=false;²  Thanks Yongqiang On 2/19/10...
   Author: Yongqiang He, 2010-02-19, 22:49
Re: map join and OOM - Hive - [mail # user]
...Actually Hive-917 only help when the joining tables are bucketed.  With hive-trunk (not sure about 0.5), there will not has OOM anymore in Hive's mapjoin, no matter how big you table is...
   Author: Yongqiang He, 2010-02-19, 05:39
Re: Help with Compressed Storage - Hive - [mail # user]
...Like Zheng said, Try set hive.exec.compress.output=true; "set hive.exec.compress.intermediate=true" is not recommended because of th e cpu cost.  Also in some cases, set hive.merge.mapf...
   Author: Yongqiang He, 2010-02-16, 22:32
Re: LZO Compression on trunk - Hive - [mail # user]
...Hi Bennie, Can you post your hadoop version and hive version?  Thanks Yongqiang   On 2/5/10 10:05 AM, "Zheng Shao"  wrote:  ...
   Author: Yongqiang He, 2010-02-05, 22:27
Re: new committer: Jeff Hammerbacher - Avro - [mail # dev]
...Congratulations Jeff!  yongqiang On 1/12/10 12:12 PM, "Jeff Hammerbacher"  wrote:  ...
   Author: Yongqiang He, 2010-01-12, 22:19
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