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[PIG-2888] Improve performance of POPartialAgg - Pig - [issue]
...During performance testing, we found that POPartialAgg can cause performance degradation for Pig jobs when the Algebraic UDFs it's being applied to aren't well suited to the operator's assum...
http://issues.apache.org/jira/browse/PIG-2888    Author: Dmitriy V. Ryaboy, 2012-09-02, 23:49
[PIG-2890] Revert  PIG-2578 - Pig - [issue]
...PIG-2870 and PIG-2872 contain the discussion on why that patch needs to be reverted....
http://issues.apache.org/jira/browse/PIG-2890    Author: Dmitriy V. Ryaboy, 2012-08-25, 23:02
[PIG-2065] IsEmpty should be Accumulative - Pig - [issue]
...IsEmpty is trivial to implement as an accumulator. We should do that....
http://issues.apache.org/jira/browse/PIG-2065    Author: Dmitriy V. Ryaboy, 2012-08-24, 20:51
[PIG-2255] SIZE should be algebraic when invoked on a bag - Pig - [issue]
...SIZE of a bag is equivalent to COUNT_STAR, and should get optimized accordingly....
http://issues.apache.org/jira/browse/PIG-2255    Author: Dmitriy V. Ryaboy, 2012-08-24, 19:37
[PIG-2855] Provide a method to measure time spent in UDFs - Pig - [issue]
...When debugging slow jobs, it is often useful to know whether time is being spent in UDFs, and in which UDFs. This is easy to measure from within the framework, we should let users optionally...
http://issues.apache.org/jira/browse/PIG-2855    Author: Dmitriy V. Ryaboy, 2012-08-09, 05:34
[PIG-2804] Remove "PIG" exec type - Pig - [issue]
...the PIG exectype is sitting around doing nothing. It's said "not available yet" for years. We should kill it....
http://issues.apache.org/jira/browse/PIG-2804    Author: Dmitriy V. Ryaboy, 2012-07-10, 20:33
[PIG-2805] Remove JUnit 3 dependencies - Pig - [issue]
...We currently use both junit 4 and junit 3, which is quite confusing and inconsistent. We should go through and bump everything to use junit4, removing dependencies on 3....
http://issues.apache.org/jira/browse/PIG-2805    Author: Dmitriy V. Ryaboy, 2012-07-09, 22:02
[PIG-2675] Optimization: Remove unnecessary Limit jobs from plan - Pig - [issue]
...LIMIT operator always inserts a limiting single-reducer job after PIG-2652.We can optimize this job away when the preceding job only has 1 reducer at run-time....
http://issues.apache.org/jira/browse/PIG-2675    Author: Dmitriy V. Ryaboy, 2012-07-02, 20:50
[PIG-2777] Docs are broken due to malformed xml after PIG-2673 - Pig - [issue]
http://issues.apache.org/jira/browse/PIG-2777    Author: Dmitriy V. Ryaboy, 2012-06-28, 17:25
[PIG-2673] Allow Merge join to follow an ORDER statement - Pig - [issue]
...Currently, we insist that data for a merge join must come from an OrderedLoadFunc.We can relax this condition and allow explicit ordering operations to precede a MergeJoin....
http://issues.apache.org/jira/browse/PIG-2673    Author: Dmitriy V. Ryaboy, 2012-06-26, 17:30
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