[IGNITE-7090] Semaphore Stuck when no acquirers to assign permit

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1, 2.4
• Fix Version/s: 2.5
• Component/s: cache, data structures
• Assignee: Tim Onyschak
• Reporter: Tim Onyschak
• Created: 01/Dec/17 17:35
• Updated: 31/Mar/18 13:05
• Resolved: 31/Mar/18 13:02

Description

If no acquirers are available to take permit of semaphore, the permit never gets release and any further acquirerers will wait forever.

On node shut down DataStructuresProcessor.dsMap gets cleared out prior to event listener being able to execute onNodeRemoved, hence owner is never cleared out if it was unable to pass to a different acquirer.

Issue Links

• links to: GitHub Pull Request #3138
• links to: GitHub Pull Request #3443