[DRILL-3387] Push down joins into source db

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.0.0
• Fix Version/s: Future
• Component/s: Storage - Other
• Flags: Important
• Assignee: Unassigned
• Reporter: Magnus Pierre
• Created: 26/Jun/15 11:51
• Updated: 01/Oct/15 16:37

Description

The current implementation of the JDBC plugin to connect to source databases does not push down joins. In order for this to happen, we need to implement a StoragePluginOptimizerRule that converts the physical plan to source side joins.
Furthermore, the scan spec and the reader need to be extended in order to implement the push down.