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[HIVE-4809] ReduceSinkOperator of PTFOperator can have redundant key columns - Hive - [issue]
...For example, we have a simple query like this ...SELECT x.a, x.b, count(x.b) OVER (PARTITION BY x.a) FROM src x;The plan of it is ...STAGE DEPENDENCIES:  Stage-1 is a root stage&nb...
http://issues.apache.org/jira/browse/HIVE-4809    Author: Yin Huai, 2015-01-19, 17:40
Do we support "==" operator? - Hive - [mail # dev]
...Hi,Based on our language manual (https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF), seemswe do not support "==" operator. However, in FunctionRegistry, we treat"==" as "="...
   Author: Yin Huai, 2014-07-22, 16:12
[HIVE-5130] Document Correlation Optimizer in Hive wiki - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-5130    Author: Yin Huai, 2014-07-14, 08:48
[HIVE-3667] Umbrella jira for Correlation Optimizer - Hive - [issue]
...This is an umbrella jira to track work related to Correlation Optimizer (originally proposed in HIVE-2206)....
http://issues.apache.org/jira/browse/HIVE-3667    Author: Yin Huai, 2014-07-14, 04:22
[HIVE-7362] Enabling Correlation Optimizer by default. - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-7362    Author: Yin Huai, 2014-07-14, 04:22
[HIVE-4867] Deduplicate columns appearing in both the key list and value list of ReduceSinkOperator - Hive - [issue]
...A ReduceSinkOperator emits data in the format of keys and values. Right now, a column may appear in both the key list and value list, which result in unnecessary overhead for shuffling. Exam...
http://issues.apache.org/jira/browse/HIVE-4867    Author: Yin Huai, 2014-06-19, 01:57
Correlation Optimizer - Apache Hive - Apache Software Foundation - Hive - [wiki]
...                Go to start of metadata                           &nbs...
https://cwiki.apache.org/confluence/display/Hive/Correlation+Optimizer    Author: Yin Huai, 2014-04-01, 00:00
[HIVE-6631] NPE when select a field of a struct from a table stored by ORC - Hive - [issue]
...I have a table like this ...create table lineitem_orc_cg(CG1 STRUCT<L_PARTKEY:INT,           L_SUPPKEY:INT,           L_COMMITD...
http://issues.apache.org/jira/browse/HIVE-6631    Author: Yin Huai, 2014-03-22, 02:14
[HIVE-6668] When auto join convert is on and noconditionaltask is off, ConditionalResolverCommonJoin fails to resolve map joins. - Hive - [issue]
...I tried the following query today ...set mapred.job.map.memory.mb=2048;set mapred.job.reduce.memory.mb=2048;set mapred.map.child.java.opts=-server -Xmx3072m -Djava.net.preferIPv4Stack=true;s...
http://issues.apache.org/jira/browse/HIVE-6668    Author: Yin Huai, 2014-03-20, 22:20
[HIVE-5910] In HiveConf, the name of mapred.min.split.size.per.rack is MAPREDMINSPLITSIZEPERNODE and the name of mapred.min.split.size.per.node is MAPREDMINSPLITSIZEPERRACK - Hive - [issue]
...In HiveConf.java ...MAPREDMINSPLITSIZEPERNODE("mapred.min.split.size.per.rack", 1L),MAPREDMINSPLITSIZEPERRACK("mapred.min.split.size.per.node", 1L),Then, in ExecDriver.java ...if (mWork.getM...
http://issues.apache.org/jira/browse/HIVE-5910    Author: Yin Huai, 2014-03-20, 22:01
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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