Licensing check can sometimes fail the first time it's called due to thread safety

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.0 CE GA1
• Fix Version/s: 6.1.X EE, 6.2.X EE, 7.0.0 CE RC1
• Component/s: App Management, App Management > License Manager, Fault Tolerance
• Labels:
  • liferay-fixpack-portal-109-6210
• Branch Version/s:
  6.2.x, 6.1.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/37768

Thread safety issue in LicenseUtil.

It's difficult to reproduce the issue, but it's possible that multiple threads can perform a licensing check at the same time and sometimes some of them will fail if it's one of the first licensing checks when the _ipAddresses and _macAddresses fields are set before they are populated.