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Sriranjan Manjunath commented on PIG-792: ----------------------------------------- I have fixed the issue with a nullpointerexception when schema was specified as part of load. It was a bug in rewire of LOJoin. The current patch is the latest one and has no known issues. > 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.