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[HIVE-266] Improve SerDe performance by using Text instead of String - Hive - [issue]
...A recent performance study showed that 2 places in Hive code has exhibited large cpu usage percentage:1. String.getBytes() (UTF-8 encoding)2. String.split()We should replace String with Text...
http://issues.apache.org/jira/browse/HIVE-266    Author: Zheng Shao, 2011-12-17, 00:07
[HIVE-164] Support CASE statement using GenericUDF - Hive - [issue]
...See http://dev.mysql.com/doc/refman/5.0/en/control-flow-functions.html for details.Syntax:CASE value WHEN [compare_value] THEN result [WHEN [compare_value] THEN result ...] [<ELSE result]...
http://issues.apache.org/jira/browse/HIVE-164    Author: Zheng Shao, 2011-12-17, 00:07
[HIVE-541] Implement UDFs: INSTR and LOCATE - Hive - [issue]
...http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_instrhttp://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_locateThese functions can be directly impleme...
http://issues.apache.org/jira/browse/HIVE-541    Author: Zheng Shao, 2011-12-17, 00:07
[HIVE-527] Inserting into a partitioned table without specifying the partition field should fail - Hive - [issue]
...The following piece of code should fail but it succeeded - and it deletes all existing partitions of zshao_p.CREATE TABLE zshao_p (a string) PARTITIONED BY (ds string);INSERT OVERWRITE table...
http://issues.apache.org/jira/browse/HIVE-527    Author: Zheng Shao, 2011-12-17, 00:07
[HIVE-626] Typecast bug in Join operator - Hive - [issue]
...There is a type cast error in Join operator. Produced by the following steps:create table zshao_foo (foo_id int, foo_name string, foo_a string, foo_b string,foo_c string, foo_d string) row f...
http://issues.apache.org/jira/browse/HIVE-626    Author: Zheng Shao, 2011-12-17, 00:07
[HIVE-540] Restore the test.silent setting - Hive - [issue]
...ExecDriver code was inadvertently changed in the test log output part. We should change it back....
http://issues.apache.org/jira/browse/HIVE-540    Author: Zheng Shao, 2011-12-17, 00:07
[HIVE-498] UDFRegExp NullPointerException on empty replacement string - Hive - [issue]
...UDFRegExp, UDFRegExpReplace, UDFRegExpExtract will throw out NullPointerException if the replacement String is empty or pattern is empty...
http://issues.apache.org/jira/browse/HIVE-498    Author: Zheng Shao, 2011-12-17, 00:07
[HIVE-729] select expression with optional "as" - Hive - [issue]
..."as" should be optional in select expression. Query like the following should work:SELECT a, b FROM (  SELECT key a, value b  FROM src) src1ORDER BY a LIMIT 1;...
http://issues.apache.org/jira/browse/HIVE-729    Author: Zheng Shao, 2011-12-17, 00:07
[HIVE-496] UDFDate fails on null - Hive - [issue]
...UDFDate will output null pointer exception if called with null....
http://issues.apache.org/jira/browse/HIVE-496    Author: Zheng Shao, 2011-12-17, 00:07
[HIVE-284] Column pruning after join+group-by query - Hive - [issue]
...The query is:explain INSERT OVERWRITE TABLE t    SELECT t1.r, t2.c, sum(t1.v * t2.v)    FROM t1 join t2 on t1.c = t2.rGROUP BY t1.r, t2.c;The FileSinkOperator a...
http://issues.apache.org/jira/browse/HIVE-284    Author: Zheng Shao, 2011-12-17, 00:07
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