[FLINK-11855] Race condition in EmbeddedLeaderService

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.7.2, 1.8.0
• Fix Version/s: 1.7.3, 1.8.0
• Component/s: Runtime / Coordination
• Labels: pull-request-available
• Assignee: Till Rohrmann
• Reporter: Till Rohrmann
• Created: 07/Mar/19 15:35
• Updated: 08/Apr/19 07:58
• Resolved: 29/Mar/19 09:41

Description

There is a race condition in the EmbeddedLeaderService which can occur if the EmbeddedLeaderService is shut down before the GrantLeadershipCall has been executed. In this case, the contender is nulled which leads to a NPE.

Issue Links

• links to: GitHub Pull Request #7935