[MNG-7312] Revert ThreadLocal approach from MNG-6843 and MNG-7251

[jira-importer]

Michael Osipov opened MNG-7312 and commented

Both have been proved not to work as intended. They will be reverted.

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Affects: 3.0-alpha-1, 3.8.3

Issue Links:

• MNG-7285 [Regression] MavenProject.getArtifacts() not returning correct value across multiple threads
  ("fixes")
• MNG-7300 [Regression] Reloading web application (Enter) fails due to java.lang.ClassNotFoundException
  ("fixes")
• MNG-7335 [Regression] Parallel build fails due to missing JAR artifacts in compilePath
  ("causes")
• MNG-7251 Fix threadLocalArtifactsHolder leaking into cloned project
  ("is broken by")
• MNG-6843 Parallel build fails due to missing JAR artifacts in compilePath
  ("is broken by")

Remote Links:

• GitHub Pull Request #594
  
• GitHub Pull Request #595
  

Backported to: 4.0.0-alpha-2, 3.8.4

[jira-importer]

Michael Osipov commented

Fixed with 8784812cf6af6c72597a8f3de45288ce7b1206a6 and 5c36bf5ef78a162cefea47ccdaf0d28e01c1426c for maven-3.8.x branch.