[SPARK-26665] BlockTransferService.fetchBlockSync may hang forever

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0, 2.3.1, 2.3.2, 2.4.0
• Fix Version/s: 2.3.3, 2.4.1, 3.0.0
• Component/s: Spark Core
• Assignee: Shixiong Zhu
• Reporter: Shixiong Zhu
• Created: 18/Jan/19 21:36
• Updated: 06/Feb/19 16:52
• Resolved: 22/Jan/19 17:02

Description

`ByteBuffer.allocate` may throw OutOfMemoryError when the block is large but no enough memory is available. However, when this happens, right now BlockTransferService.fetchBlockSync will just hang forever.

Issue Links

• links to: [Github] Pull Request #23590 (zsxwing)
• links to: GitHub Pull Request #23590