[jira] [Updated] (PIG-3647) Implement merge join in Tez

["Daniel Dai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-3647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Dai updated PIG-3647:
----------------------------

    Attachment: PIG-3647-1.patch

The implement uses 2 DAG:
DAG 1. Build index for right input
DAG 2. Do merge join using the index

It is possible to use 1 DAG, however, currently there are too much logic inside loader (MergeJoinIndexer to build index, DefaultIndexableLoader to read index), migrate those will take time. I think we'd better move on and revisit later.

> Implement merge join in Tez
> ---------------------------
>
>                 Key: PIG-3647
>                 URL: https://issues.apache.org/jira/browse/PIG-3647
>             Project: Pig
>          Issue Type: Sub-task
>          Components: tez
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>             Fix For: tez-branch
>
>         Attachments: PIG-3647-1.patch
>
>




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