You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@pig.apache.org by "Xianda Ke (JIRA)" <ji...@apache.org> on 2016/09/06 12:43:21 UTC

[jira] [Created] (PIG-5024) add a physical operator to broadcast small RDDs

Xianda Ke created PIG-5024:
------------------------------

             Summary: add a physical operator to broadcast small RDDs
                 Key: PIG-5024
                 URL: https://issues.apache.org/jira/browse/PIG-5024
             Project: Pig
          Issue Type: Sub-task
            Reporter: Xianda Ke
            Assignee: Xianda Ke


Currently, when optimize some kinds of JOIN, the indexed or sampling files are saved into HDFS. By setting the replication to a larger number, it serves as cache.

It seems that we can add a physical operator to broadcast small RDDs.
This will benefit some specialized Joins, such as Skewed Join, Replicated Join and so on. 





--
This message was sent by Atlassian JIRA
(v6.3.4#6332)