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Hadoop QA commented on PIG-792: ------------------------------- -1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12412944/skewedjoin.patch against trunk revision 792368. +1 @author. The patch does not contain any @author tags. +1 tests included. The patch appears to include 4 new or modified tests. +1 javadoc. The javadoc tool did not generate any warning messages. +1 javac. The applied patch does not increase the total number of javac compiler warnings. -1 findbugs. The patch appears to introduce 1 new Findbugs warnings. +1 release audit. The applied patch does not increase the total number of release audit warnings. -1 core tests. The patch failed core unit tests. +1 contrib tests. The patch passed contrib unit tests. Test results: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/116/testReport/ Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/116/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/116/console This message is automatically generated. > PERFORMANCE: Support skewed join in pig > --------------------------------------- > > Key: PIG-792 > URL: https://issues.apache.org/jira/browse/PIG-792 > Project: Pig > Issue Type: Improvement > Reporter: Sriranjan Manjunath > Attachments: skewedjoin.patch > > > Fragmented replicated join has a few limitations: > - One of the tables needs to be loaded into memory > - Join is limited to two tables > Skewed join partitions the table and joins the records in the reduce phase. > It computes a histogram of the key space to account for skewing in the input > records. Further, it adjusts the number of reducers depending on the key > distribution. > We need to implement the skewed join in pig. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.