[SPARK-31985] Remove the incomplete code path on aggregation for continuous mode

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: Structured Streaming
• Assignee: Jungtaek Lim
• Reporter: Jungtaek Lim
• Created: 14/Jun/20 07:33
• Updated: 15/Jul/20 04:41
• Resolved: 15/Jul/20 04:41

Description

During work I realized we left some incomplete code parts on supporting aggregation for continuous mode. (shuffle & coalesce)
 
The work had been occurred around first half of 2018 and stopped, and no work has been done for around 2 years, so I don't expect anyone is working on this.
 
The functionality is undocumented (as the work was only done partially) and continuous mode is experimental so I don't feel risks to get rid of the part.

Issue Links

• links to: [Github] Pull Request #29077 (HeartSaVioR)
• links to: [Github] Pull Request #29077 (HeartSaVioR)