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

Posted to dev@flink.apache.org by "Fabian Hueske (JIRA)" <ji...@apache.org> on 2015/10/19 18:17:05 UTC

[jira] [Created] (FLINK-2871) Add OuterJoin strategy with HashTable on outer side

Fabian Hueske created FLINK-2871:
------------------------------------

             Summary: Add OuterJoin strategy with HashTable on outer side
                 Key: FLINK-2871
                 URL: https://issues.apache.org/jira/browse/FLINK-2871
             Project: Flink
          Issue Type: New Feature
          Components: Local Runtime, Optimizer
    Affects Versions: 0.10
            Reporter: Fabian Hueske
            Priority: Minor


Outer joins are currently supported with two local execution strategies:
- sort-merge join
- hash join where the hash table is built on the inner side. Hence, this strategy is only supported for left and right outer joins.

In order to support hash-tables on the outer side, we need a special hash table implementation that gives access to all records which have not been accessed during the probe phase.



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