[SPARK-25187] Revisit the life cycle of ReadSupport instances.

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Incomplete
• Affects Version/s: 2.4.0
• Component/s: SQL
• Labels: bulk-closed
• Assignee: Unassigned
• Reporter: Wenchen Fan
• Created: 22/Aug/18 05:58
• Updated: 25/May/21 01:52
• Resolved: 25/May/21 01:44

Description

Currently the life cycle is bound to the batch/stream query. This fits streaming very well but may not be perfect for batch source. We can also consider to let ReadSupport.newScanConfigBuilder take DataSourceOptions as parameter, if we decide to change the life cycle.