[jdk17u-dev] RFR: 8269428: java/util/concurrent/ConcurrentHashMap/ToArray.java timed out

[Andrew Lu]

I backport this for parity with 17.0.13-oracle.
‘ try (var executor = Executors.newCachedThreadPool())’ is modified due to it's not supported in 17.

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Commit messages:
 - Backport 86b27b784e20f7cdadd241f7feedd024482baa8f
 - Backport 86b27b784e20f7cdadd241f7feedd024482baa8f
 - Backport 570ad67204a55dd4b45e04e5a91671fed2cc18d0

Changes: https://git.openjdk.org/jdk17u-dev/pull/2577/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2577&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8269428
  Stats: 54 lines in 1 file changed: 7 ins; 0 del; 47 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2577.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2577/head:pull/2577

PR: https://git.openjdk.org/jdk17u-dev/pull/2577