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[HIVE-7905] CBO: more cost model changes - Hive - [issue]
...1. For composite predicates smoothen the Selectivity calculation using exponential backoff. Thanks to [~ mmokhtar] for this formula.Can you change the algorithm to use exponential ba...
http://issues.apache.org/jira/browse/HIVE-7905    Author: Harish Butani, 2014-09-06, 00:46
[HIVE-7324] CBO: provide a mechanism to test CBO features based on table stats only (w/o table data) - Hive - [issue]
...Since lot of the CBO work is focused on planning, it will be nice to be able to run explain query to test CBO features. TPCDS has a rich enough schema and query set. So the patch loads a dum...
http://issues.apache.org/jira/browse/HIVE-7324    Author: Harish Butani, 2014-09-03, 09:00
[HIVE-7915] Expose High and Low value in plan.ColStatistics - Hive - [issue]
...These are being read from the Metastore but not populated in ColumnStatistics. One of the uses of this is HIVE-7905...
http://issues.apache.org/jira/browse/HIVE-7915    Author: Harish Butani, 2014-09-03, 00:24
[HIVE-7945] ColumnStatsUpdateTask is not setting stats for Date columns - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-7945    Author: Harish Butani, 2014-09-03, 00:14
[HIVE-7000] Several issues with javadoc generation - Hive - [issue]
...1.Ran 'mvn  javadoc:javadoc -Phadoop-2'.  Encountered several issues Generated classes are included in the javadoc generation fails in the top level hcatalog folder because its src...
http://issues.apache.org/jira/browse/HIVE-7000    Author: Harish Butani, 2014-09-02, 22:42
[HIVE-7940] Expose Machine Learning functions and Model application in Hive - Hive - [issue]
...Machine Learning functions HiveMall has demonstrated how to do machine learning in Hive. It has an extensive set of  functions; it shows a way through UDTFs and Amplify technique to do ...
http://issues.apache.org/jira/browse/HIVE-7940    Author: Harish Butani, 2014-09-02, 20:56
[HIVE-7720] CBO: rank translation to Optiq RelNode tree failing - Hive - [issue]
...Following query:explain select p_namefrom (select p_mfgr, p_name, p_size, rank() over(partition by p_mfgr order by p_size) as r from part) awhere r <= 2;fails with org.apache.hadoop.hive....
http://issues.apache.org/jira/browse/HIVE-7720    Author: Harish Butani, 2014-08-26, 22:55
[HIVE-7721] CBO: support case statement translation to optiq - Hive - [issue]
...Following query:explain select case when key > '104' then null else key end as key from srcfails with:java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: U...
http://issues.apache.org/jira/browse/HIVE-7721    Author: Harish Butani, 2014-08-25, 18:59
[HIVE-7724] CBO: support Subquery predicates - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-7724    Author: Harish Butani, 2014-08-25, 18:17
[HIVE-7804] CBO: Support SemiJoins - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-7804    Author: Harish Butani, 2014-08-21, 06:50
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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