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[HIVE-7266] Optimized HashTable with vectorized map-joins results in String columns extending - Hive - [issue]
...The following query returns different results when both vectorized mapjoin and the new optimized hashtable are enabled.hive> set hive.vectorized.execution.enabled=false;hive> select s_...
http://issues.apache.org/jira/browse/HIVE-7266    Author: Gopal V, 2014-07-24, 23:50
[HIVE-7397] Set the default threshold for fetch task conversion to 1Gb - Hive - [issue]
...Currently, modifying the value of hive.fetch.task.conversion to "more" results in a dangerous setting where small scale queries function, but large scale queries crash.This occurs because th...
http://issues.apache.org/jira/browse/HIVE-7397    Author: Gopal V, 2014-07-23, 20:11
[HIVE-6988] Hive changes for tez-0.5.x compatibility - Hive - [issue]
...Umbrella JIRA to track all hive changes needed for tez-0.5.x compatibility.tez-0.4.x -> tez.0.5.x is going to break backwards compat....
http://issues.apache.org/jira/browse/HIVE-6988    Author: Gopal V, 2014-07-18, 01:47
[HIVE-7160] Vectorization Udf: GenericUDFConcat for non-string columns input, is not supported - Hive - [issue]
...simple UDF missing vectorization - simple example would be hive> explain select concat( l_orderkey, ' msecs') from lineitem;is not vectorized whilehive>  explain select concat(cas...
http://issues.apache.org/jira/browse/HIVE-7160    Author: Gopal V, 2014-07-17, 23:28
[HIVE-7428] OrcSplit fails to account for columnar projections in its size estimates - Hive - [issue]
...Currently, ORC generates splits based on stripe offset + stripe length.This means that the splits for all columnar projections are exactly the same size, despite reading the footer which giv...
http://issues.apache.org/jira/browse/HIVE-7428    Author: Gopal V, 2014-07-16, 18:44
[HIVE-7417] select count(1) from ... where true; fails in optimizer - Hive - [issue]
...Simple queries which fail are  select count(1) from store_sales where true and ss_sold_date='2001-01-02'; select count(1) from store_sales where true;FAILED: SemanticException java...
http://issues.apache.org/jira/browse/HIVE-7417    Author: Gopal V, 2014-07-15, 23:54
[HIVE-7402] add `approx_distinct` & composable nDV UDAFs - Hive - [issue]
...Build composable approximate distinct UDAFs into hive.This is useful for approximate queries, particularly for collapsing partial nDV values whenever a partition is added.hive> select app...
http://issues.apache.org/jira/browse/HIVE-7402    Author: Gopal V, 2014-07-14, 22:34
[HIVE-7394] ORC writer logging fails when the padding is < 0.01 - Hive - [issue]
...Currently ORC inserts logs the padding fraction.The log line throws a format exception when padding is too small....
http://issues.apache.org/jira/browse/HIVE-7394    Author: Gopal V, 2014-07-14, 04:38
[HIVE-7396] BucketingSortingReduceSinkOptimizer throws NullPointException during ETL - Hive - [issue]
...When a bucketed insert is performed from a partitioned table into a new table2014-07-11 22:11:30,176 ERROR [main]: ql.Driver (SessionState.java:printError(660)) - FAILED: NullPointerExceptio...
http://issues.apache.org/jira/browse/HIVE-7396    Author: Gopal V, 2014-07-12, 15:28
[HIVE-7144] GC pressure during ORC StringDictionary writes - Hive - [issue]
...When ORC string dictionary writes data out, it suffers from bad GC performance due to a few allocations in-loop.The conversions are as followsStringTreeWriter::getStringValue() causes 2 conv...
http://issues.apache.org/jira/browse/HIVE-7144    Author: Gopal V, 2014-07-08, 21:14
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