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[HIVE-7205] Wrong results when union all of grouping followed by group by with correlation optimization - Hive - [issue]
...use case :table TBL (a string,b string) contains single row : 'a','a'the following query :select b, sum(cc) from (        select b,count(1) as cc from TBL group by b...
http://issues.apache.org/jira/browse/HIVE-7205    Author: dima machlin, 2014-08-11, 19:41
[HIVE-7314] Wrong results of UDF when hive.cache.expr.evaluation is set - Hive - [issue]
...It seems that the expression caching doesn't work when using UDF inside another UDF or a hive function.For example :tbl has one row : 'a','b'The following query : select concat(custUDF(...
http://issues.apache.org/jira/browse/HIVE-7314    Author: dima machlin, 2014-07-16, 07:49
[HIVE-7045] Wrong results in multi-table insert aggregating without group by clause - Hive - [issue]
...This happens whenever there are more than 1 reducers.The scenario :CREATE  TABLE t1 (a int, b int);CREATE  TABLE t2 (cnt int) PARTITIONED BY (var_name string);insert into table t1 ...
http://issues.apache.org/jira/browse/HIVE-7045    Author: dima machlin, 2014-07-07, 23:07
[HIVE-7346] Wrong results caused by hive ppd under specific join condition - Hive - [issue]
...Assuming two tables : t1(id1 string,id2 string) , t2 (id string,d int) t1 contains 1 row : 'a','a't2 contains 1 row : 'a',2The following query :  select a.*,b.d d1,c.d d2from t1 a ...
http://issues.apache.org/jira/browse/HIVE-7346    Author: dima machlin, 2014-07-07, 23:05
[HIVE-5607] Hive fails to parse the "%" (mod) sign after brackets. - Hive - [issue]
...the scenario :create table t(a int);select * from t order by (a)%7;will fail with the following exception :FAILED: ParseException line 1:28 mismatched input '%' expecting EOF near ')'I must ...
http://issues.apache.org/jira/browse/HIVE-5607    Author: dima machlin, 2014-06-15, 11:34
[HIVE-5964] Hive missing a filter predicate causing wrong results joining tables after sort by - Hive - [issue]
...It seems like the optimization of predicate pushdown is failing under certain conditions causing wrong results as a filter predicate appears to be completely disregarded by the query process...
http://issues.apache.org/jira/browse/HIVE-5964    Author: dima machlin, 2014-03-22, 05:35
[HIVE-6448] Java heap space pasring a query with many union all - Hive - [issue]
...too many union all statements in a single query require massive amount of memory to process.Under default HiveServer Xmx (256) we can run ~50 union alls.It seems to be rather linear as incre...
http://issues.apache.org/jira/browse/HIVE-6448    Author: dima machlin, 2014-02-17, 13:22
[HIVE-6141] Can't select from views after upgrading metastore from 0.7 to 0.10 - Hive - [issue]
...Selecting from a view created in 0.7 after upgrade to 0.10 fails on Invalid table alias or column referenceThe reason is that while running this :create view a as select b from c.d;in v0.7 w...
http://issues.apache.org/jira/browse/HIVE-6141    Author: dima machlin, 2014-01-05, 13:45
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