[IMPALA-4548] BlockingJoinNode::Close() should wait for completion of async build thread

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.8.0
• Fix Version/s: Impala 2.9.0
• Component/s: Backend
• Assignee: Michael Ho
• Reporter: Michael Ho
• Created: 28/Nov/16 22:32
• Updated: 21/Apr/17 21:24
• Resolved: 21/Apr/17 21:20

Description

As shown in IMPALA-4532, the build async thread can still be running after the query has completed. This may lead use-after-free issue in IMPALA-4532. A more appropriate design is for BlockingJoinNode::Close() to wait for the completion of the build thread.