skewed join partitioner returns negative partition index
---------------------------------------------------------
Key: PIG-1135
URL: https://issues.apache.org/jira/browse/PIG-1135
Project: Pig
Issue Type: Improvement
Reporter: Ying He
Assignee: Sriranjan Manjunath
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.
