[SPARK-3134] Update block locations asynchronously in TorrentBroadcast

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Incomplete
• Component/s: Block Manager, Spark Core
• Labels: bulk-closed
• Assignee: Unassigned
• Reporter: Reynold Xin
• Created: 19/Aug/14 20:26
• Updated: 17/May/20 18:21
• Resolved: 21/May/19 05:36

Description

Once the TorrentBroadcast gets the data blocks, it needs to tell the master the new location. We should make the location update non-blocking to reduce roundtrips we need to launch tasks.