[jira] [Created] (JSPWIKI-1178) Deadlock with Java Virtual Threads

["Arturo Bernal (Jira)" <ji...@apache.org>]

Arturo Bernal created JSPWIKI-1178:
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             Summary: Deadlock with Java Virtual Threads
                 Key: JSPWIKI-1178
                 URL: https://issues.apache.org/jira/browse/JSPWIKI-1178
             Project: JSPWiki
          Issue Type: Improvement
            Reporter: Arturo Bernal


With the upcoming release of JDK 21, it's anticipated that a new feature called "Virtual Threads" will be included. This feature may introduce a potential deadlock issue in  JSPWiki application, particularly when blocking operations occur within {{synchronized}} blocks/methods. In such cases, the platform thread associated with a virtual thread may become "pinned" and unavailable to execute other virtual threads.

This ticket aims to:
 # Investigate if and how the JSPWiki application might be affected by this change in JDK 21's Virtual Threads.

 # If found to be at risk of the aforementioned deadlock situation, propose and implement changes to address this issue, ensuring the application's stability and performance aren't compromised.

*Steps to Reproduce:*

While this issue isn't currently reproducible as JDK 21 hasn't been released yet, potential risk areas in the application code can be identified by looking for {{synchronized}} blocks/methods that contain blocking operations.

*Suggested Actions:*
 # Conduct an audit of the ScanPro application's source code to identify any {{synchronized}} blocks/methods that may contain blocking operations.

 # Analyze the potential impact of the "Virtual Threads" feature on these code segments.

 # If a risk of deadlock is identified, explore alternative solutions or workarounds. This could involve refactoring the code, using different concurrency controls, or adjusting the usage of resources.

 # Test these changes thoroughly in a controlled environment before deploying them to production.



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