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[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-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
[HIVE-5787] Move non-type specific column statistics to ColumnStatistics object in ORC - Hive - [issue]
...Non-type statistics like min, max, numNulls etc. can be moved to ColumnStatistics class. This avoids ugly checks like  if (index instanceof IntegerColumnStatistics) {    ...
http://issues.apache.org/jira/browse/HIVE-5787    Author: Prasanth J, 2014-03-03, 20:04
[HIVE-5986] ORC SARG evaluation fails with NPE for UDFs or expressions in predicate condition - Hive - [issue]
...select s from orctable where length(substr(s, 1, 2)) <= 2 and s like '%'; kind of queries generate empty child expressions for the operator (AND in this case). When child expressions...
http://issues.apache.org/jira/browse/HIVE-5986    Author: Prasanth J, 2014-02-27, 22:31
[HIVE-5994] ORC RLEv2 encodes wrongly for large negative BIGINTs  (64 bits ) - Hive - [issue]
...For large negative BIGINTs, zigzag encoding will yield large value (64bit value) with MSB set to 1. This value is interpreted as negative value in SerializationUtils.findClosestNumBits(long ...
http://issues.apache.org/jira/browse/HIVE-5994    Author: Prasanth J, 2014-02-20, 11:51
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