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[HIVE-7071] Use custom Tez split generator to support schema evolution - Hive - [issue]
...Right now we're falling back to combinehivefileinputformat and switch of am side grouping when there's different schemata in a single vertex. We need to handle this in a custom initializer s...
http://issues.apache.org/jira/browse/HIVE-7071    Author: Gunther Hagleitner, 2014-06-02, 00:47
[HIVE-7112] Tez processor swallows errors - Hive - [issue]
...If a OOM or other occurs during initializing a TezProcessor the original stack trace/throwable is swallowed and replaced by a misleading NPE caused by trying to close an uninitialized proces...
http://issues.apache.org/jira/browse/HIVE-7112    Author: Gunther Hagleitner, 2014-05-31, 07:10
[HIVE-7148] Use murmur hash to create bucketed tables - Hive - [issue]
...HIVE-7121 introduced murmur hashing for queries that don't insert into bucketed tables. This was done to achieve better distribution of the data. The same should be done for bucketed tables ...
http://issues.apache.org/jira/browse/HIVE-7148    Author: Gunther Hagleitner, 2014-05-30, 05:47
[HIVE-6189] Support top level union all statements - Hive - [issue]
...I've always wondered why union all has to be in subqueries in hive.After looking at it, problems are: Hive Parser: Union happens at the wrong place (insert ... select ... union all select .....
http://issues.apache.org/jira/browse/HIVE-6189    Author: Gunther Hagleitner, 2014-05-27, 14:43
[HIVE-4440] SMB Operator spills to disk like it's 1999 - Hive - [issue]
...I was recently looking into some performance issue with a query that used SMB join and was running really slow. Turns out that the SMB join by default caches only 100 values per key before s...
http://issues.apache.org/jira/browse/HIVE-4440    Author: Gunther Hagleitner, 2014-05-19, 09:50
[HIVE-4320] Consider extending max limit for precision to 38 - Hive - [issue]
...Max precision of 38 still fits in 128. It changes the way you do math on these numbers though. Need to see if there will be perf implications, but there's a strong case to support 38 (instea...
http://issues.apache.org/jira/browse/HIVE-4320    Author: Gunther Hagleitner, 2014-05-18, 08:35
[HIVE-4271] Limit precision of decimal type - Hive - [issue]
...The current decimal implementation does not limit the precision of the numbers. This has a number of drawbacks. A maximum precision would allow us to: Have SerDes/filformats store decimals m...
http://issues.apache.org/jira/browse/HIVE-4271    Author: Gunther Hagleitner, 2014-05-18, 08:35
[HIVE-6098] Merge Tez branch into trunk - Hive - [issue]
...I think the Tez branch is at a point where we can consider merging it back into trunk after review. Tez itself has had its first release, most hive features are available on Tez and the test...
http://issues.apache.org/jira/browse/HIVE-6098    Author: Gunther Hagleitner, 2014-05-18, 01:09
[expand - 1 more] - Re: Review Request 18936: HIVE-6430 MapJoin hash table has large memory overhead - Hive - [mail # dev]
...This is an automatically generated e-mail. To reply, visit:https://reviews.apache.org/r/18936/#review42539ql/src/java/org/apache/hadoop/hive/ql/debug/Utils.java    This is nic...
   Author: Gunther Hagleitner, 2014-05-16, 22:55
[HIVE-7037] Add additional tests for transform clauses with Tez - Hive - [issue]
...Enabling some q tests for Tez wrt to ScriptOperator/Stream/Transform....
http://issues.apache.org/jira/browse/HIVE-7037    Author: Gunther Hagleitner, 2014-05-13, 02:36
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