Patch to fix org.eclipse.equinox.http.servlet.internal.context.ProxyContext global locking bottleneck

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.0 DXP FP10, 7.0.0 DXP SP2, 7.0.3 CE GA4, 7.1.X, Master
• Component/s: Core Infrastructure, Core Infrastructure > Wab Extender, Performance
• Labels:
  • liferay-digital-enterprise-70-sp2
  • liferay-fixpack-de-10-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/45390

org.eclipse.equinox.http.servlet.internal.context.ProxyContext has an unscalable concurrent protection, it uses synchronized methods to protect the shared attributesMap, which is not really necessary. When system is under concurrent load, we hit this global synchronize bottleneck, and threads are blocked.

See the attached thread dump file, and search for "0x000000075de4adf8"