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[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-5579] Update statistics rules for different types of joins - Hive - [issue]
...This is a followup of HIVE-5369. Current statistics rules for join operator are generic and are not specific to the type of join. Update the rules based on the type of joins....
http://issues.apache.org/jira/browse/HIVE-5579    Author: Prasanth J, 2014-03-25, 23:53
[HIVE-6455] Scalable dynamic partitioning and bucketing optimization - Hive - [issue]
...The current implementation of dynamic partition works by keeping at least one record writer open per dynamic partition directory. In case of bucketing there can be multispray file writers wh...
http://issues.apache.org/jira/browse/HIVE-6455    Author: Prasanth J, 2014-03-24, 19:32
[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-6711] ORC maps uses getMapSize() from MapOI which is unreliable - Hive - [issue]
...HIVE-6707 had issues with map size. getMapSize() of LazyMap and LazyBinaryMap does not deserialize the keys and count the number of unique keys. Since getMapSize() may return non-distinct co...
http://issues.apache.org/jira/browse/HIVE-6711    Author: Prasanth J, 2014-03-24, 10:20
[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-6287] batchSize computation in Vectorized ORC reader can cause BufferUnderFlowException when PPD is enabled - Hive - [issue]
...nextBatch() method that computes the batchSize is only aware of stripe boundaries. This will not work when predicate pushdown (PPD) in ORC is enabled as PPD works at row group level (stripe ...
http://issues.apache.org/jira/browse/HIVE-6287    Author: Prasanth J, 2014-03-23, 17:32
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