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[HIVE-4927] When we merge two MapJoin MapRedTasks, the TableScanOperator of the second one should be removed - Hive - [issue]
...set hive.auto.convert.join=true;set hive.auto.convert.join.noconditionaltask=true;EXPLAINSELECT x1.key AS key FROM src x1 JOIN src1 y1 ON (x1.key = y1.key) JOIN src1 y2 ON (x1.value = y2.val...
http://issues.apache.org/jira/browse/HIVE-4927    Author: Yin Huai, 2013-07-26, 16:54
[HIVE-4935] Potential NPE in MetadataOnlyOptimizer - Hive - [issue]
...In MetadataOnlyOptimizer.TableScanProcessor.process, it is possible that we consider a TableScanOperator as "MayBeMetadataOnly" when this TS does not have a conf. In MetadataOnlyOptimizer.Me...
http://issues.apache.org/jira/browse/HIVE-4935    Author: Yin Huai, 2013-07-26, 16:06
[HIVE-4912] selectStar and selStarNoCompute in SelectDesc are confusing - Hive - [issue]
...In SelectDesc, we have two confusing booleans, selectStar and selStarNoCompute. From the code, selectStar is only really used in SimpleFetchOptimizer. selStarNoCompute is used in lots of pla...
http://issues.apache.org/jira/browse/HIVE-4912    Author: Yin Huai, 2013-07-22, 21:52
Re: [ANNOUNCE] New Hive Committer - Gunther Hagleitner - Hive - [mail # dev]
...Congratulations Gunther!   On Sun, Jul 21, 2013 at 7:55 AM, Jarek Jarcec Cecho wrote:  ...
   Author: Yin Huai, 2013-07-21, 16:51
[HIVE-4877] In ExecReducer, remove tag from the row which will be passed to the first Operator at the Reduce-side - Hive - [issue]
...In ExecReducer, we can see ...row.clear();row.add(keyObject);row.add(valueObject[tag.get()]);// The tag is not used any more, we should remove it.row.add(tag);I have seen this for a long tim...
http://issues.apache.org/jira/browse/HIVE-4877    Author: Yin Huai, 2013-07-20, 23:46
[expand - 2 more] - Re: Trying to run TestRCFile.java - Hive - [mail # dev]
...Based on my experience, remote debugging is used to debug running MapReduce jobs. Seems TestRCFile is used to test RCFile reader and writer individually (I mean it is not related to MapReduc...
   Author: Yin Huai, 2013-07-19, 21:49
[HIVE-3671] If a query has been optimized by correlation optimizer, join auto convert cannot optimize it - Hive - [issue]
...Currently, if a query has been optimized by correlation optimizer, the first operator at the reduce side will be CorrelationReducerDispatchOperator. Since CommonJoinResolver will only work i...
http://issues.apache.org/jira/browse/HIVE-3671    Author: Yin Huai, 2013-07-18, 17:25
[HIVE-3670] Optimize queries involving self join - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-3670    Author: Yin Huai, 2013-07-18, 01:32
Re: [ANNOUNCE] New Hive Committer - Brock Noland - Hive - [mail # dev]
...Congrats Brock!   On Tue, Jul 16, 2013 at 1:26 PM, Lefty Leverenz wrote:  ...
   Author: Yin Huai, 2013-07-17, 22:25
[HIVE-4833] Fix eclipse template classpath to include the correct jdo lib - Hive - [issue]
...HIVE-4089 upgraded jdo to 3.0.1, but .classpath and classpath._hbase in eclipse tempalte has not been changed accordingly...
http://issues.apache.org/jira/browse/HIVE-4833    Author: Yin Huai, 2013-07-15, 18:55
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB