[jdk11u-dev] RFR: 8222884: ConcurrentClassDescLookup.java times out intermittently [v3]

[Andrew Lu]

> I backport this for parity with 11.0.25-oracle.
> Ignored this change
> [8231427: Warning cleanup in tests of java.io.Serializable](https://github.com/openjdk/jdk/commit/942402bab8a632f9e8a9b0c56201e2ab0571e6e8)
> so not clean.

Andrew Lu has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains three commits:

 - Merge branch 'master' into backport_8222884
 - Backport bd046d9b9e79e4eea89c72af358961ef6e98e660
 - Backport bd046d9b9e79e4eea89c72af358961ef6e98e660

-------------

Changes: https://git.openjdk.org/jdk11u-dev/pull/2801/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2801&range=02
  Stats: 36 lines in 1 file changed: 7 ins; 7 del; 22 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2801.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2801/head:pull/2801

PR: https://git.openjdk.org/jdk11u-dev/pull/2801