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[HIVE-5949] In statistics annotation add flag to say if statistics is estimated or accurate - Hive - [issue]
...HIVE-5921 estimates the basic statistics (row count/data size) if its not available in metastore. It will be better to have a flag which says if the statistics is estimated value or accurate...
http://issues.apache.org/jira/browse/HIVE-5949    Author: Prasanth J, 2014-03-25, 23:55
[HIVE-5868] Add statistics rule for Union operator - Hive - [issue]
...At this point union operator uses the default statistics rule which will merge the statistics from its parent operators. The default rule does not assign the output table alias to each of th...
http://issues.apache.org/jira/browse/HIVE-5868    Author: Prasanth J, 2014-03-25, 23:54
[HIVE-5805] Support for operators like PTF, Script, Extract etc. in statistics annotation. - Hive - [issue]
...Statistics annotation (HIVE-5369) only supports table scan, select, filter, limit, union, groupby, join. This sub task is to add support for remaining operators....
http://issues.apache.org/jira/browse/HIVE-5805    Author: Prasanth J, 2014-03-25, 23:54
[HIVE-5804] Support column statistics for expressions in GBY attributes, JOIN condition etc. when annotating operator tree with statistics - Hive - [issue]
...This is a followup of HIVE-5369 (Annotating operator tree with statistics information). Support for column statistics for expression in group by, join conditions needs to be added....
http://issues.apache.org/jira/browse/HIVE-5804    Author: Prasanth J, 2014-03-25, 23:54
[HIVE-6716] ORC struct throws NPE for tables with inner structs having null values - Hive - [issue]
...ORCStruct should return null when object passed to getStructFieldsDataAsList(Object obj) is null.public List<Object> getStructFieldsDataAsList(Object object) {      ...
http://issues.apache.org/jira/browse/HIVE-6716    Author: Prasanth J, 2014-03-24, 19:18
[HIVE-6707] Lazy maps are broken (LazyMap and LazyBinaryMap) - Hive - [issue]
...LazyPrimitive and LazyBinaryPrimitive overrides hashcode method in HIVE-949. But it failed to override equals() method. As a result, LazyMap and LazyBinaryMap will end up having multiple val...
http://issues.apache.org/jira/browse/HIVE-6707    Author: Prasanth J, 2014-03-24, 09:58
[HIVE-5950] ORC SARG creation fails with NPE for predicate conditions with decimal/date/char/varchar datatypes - Hive - [issue]
...When decimal or date column is used, the type field in PredicateLeafImpl will be set to null. This will result in NPE during predicate leaf generation because of null dereferencing in hashco...
http://issues.apache.org/jira/browse/HIVE-5950    Author: Prasanth J, 2014-03-23, 17:45
[HIVE-6300] Add documentation for stats configs to hive-default.xml.template - Hive - [issue]
...Add documentation for the following configshive.stats.max.variable.lengthhive.stats.list.num.entrieshive.stats.map.num.entrieshive.stats.map.parallelismhive.stats.fetch.column.statshive.stat...
http://issues.apache.org/jira/browse/HIVE-6300    Author: Prasanth J, 2014-03-23, 08:08
[HIVE-6562] Protection from exceptions in ORC predicate evaluation - Hive - [issue]
...ORC evaluates predicate expressions to select row groups that satisfy predicate condition. There can be exceptions (mostly ClassCastException) when data types of predicate constant and min/m...
http://issues.apache.org/jira/browse/HIVE-6562    Author: Prasanth J, 2014-03-18, 01:19
[HIVE-6656] Bug in ORC Timestamp reader returns wrong nanoseconds - Hive - [issue]
...ORC timestamp writer stores the number of trailing zeros in 3 LSB bits. There is a bug in parsing nanosecond logic that returns incorrect value.Input:1999-01-01 00:00:00.999999999Output: 199...
http://issues.apache.org/jira/browse/HIVE-6656    Author: Prasanth J, 2014-03-18, 00:59
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