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[HIVE-2047] refactor PartitionPrunner's prune method - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-2047    Author: He Yongqiang, 2011-03-11, 20:02
[HIVE-1967] MapOperator no need to init object inspector for all input files. - Hive - [issue]
...This could help the performance a lot if the query is very big....
http://issues.apache.org/jira/browse/HIVE-1967    Author: He Yongqiang, 2011-02-07, 19:42
[HIVE-1838] Add quickLZ compression codec for Hive. - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-1838    Author: He Yongqiang, 2010-12-09, 18:35
[HIVE-1700] Optimiza JDBM to make mapjoin faster - Hive - [issue]
...copied from email:From: Joydeep Sen SarmaSent: Tuesday, October 12, 2010 11:11 AMTo: Yongqiang He; Liyin Tang; Namit JainSubject: RE: Optimize jdbmseems like we should move all deserializati...
http://issues.apache.org/jira/browse/HIVE-1700    Author: He Yongqiang, 2010-12-01, 22:19
[HIVE-678] Add support for building index table - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-678    Author: He Yongqiang, 2010-10-29, 22:59
[HIVE-1677] revert changes made by HIVE-558 - Hive - [issue]
...There is another jira (https://issues.apache.org/jira/browse/HIVE-1658) going on to do a better fix for HIVE-558.If HIVE-1658 can not be patched in a timely fashion, we can first revert HIVE...
http://issues.apache.org/jira/browse/HIVE-1677    Author: He Yongqiang, 2010-10-01, 04:42
[HIVE-1582] merge mapfiles task behaves incorrectly for 'inserting overwrite directory...' - Hive - [issue]
...hive>     >     >     >      SET hive.input.format=org.apache.hadoop.hive.ql.io.HiveInputFormat;hive>    ...
http://issues.apache.org/jira/browse/HIVE-1582    Author: He Yongqiang, 2010-09-27, 16:55
[HIVE-1515] archive is not working when multiple partitions inside one table are archived. - Hive - [issue]
...set hive.exec.compress.output = true;set hive.input.format=org.apache.hadoop.hive.ql.io.CombineHiveInputFormat;set mapred.min.split.size=256;set mapred.min.split.size.per.node=256;set mapred...
http://issues.apache.org/jira/browse/HIVE-1515    Author: He Yongqiang, 2010-08-13, 01:10
[HIVE-1506] Optimize number of mr jobs produced by group by sort by - Hive - [issue]
...Right now,select key, INPUT_FILENAME, count(value from src group by key, INPUTFILE_NAME sort by keyrequire 2 jobsandselect key, INPUT_FILENAME, count(value from src group by key, INPUTFILE_N...
http://issues.apache.org/jira/browse/HIVE-1506    Author: He Yongqiang, 2010-08-02, 18:47
[HIVE-1058] Mapjoin operator need to clean up rowcainters used in HashMapWrapper - Hive - [issue]
...Right now rowcainter use tmp file as backup storage. So the user need to invoke clear() of RowContainer to delete tmp files....
http://issues.apache.org/jira/browse/HIVE-1058    Author: He Yongqiang, 2010-06-16, 02:00
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