[jdk11u-dev] RFR: 8244508: JFR: FlightRecorderOptions reset date format

[Pushkar N Kulkarni]

Hello all,

This backport request is related to JDK-8244508 [1]. When using JFR (`-XX:StartFlightRecording`), the configured default Locale is not honored, with FormatData or TimezoneNames(for example), because the relevant ResourceBundles do not get loaded when an attempt is made to locate and load them during VM startup (i.e when  `-XX:StartFlightRecording` triggers JFR initialiazation). Though [1] quotes a mailing-list post [2] mentioning this issue was not seen with jdk11 then, the testcase in [1] does fail with 11.0.20 (as well as 11.0.22/master branch) as of today:


$ java --show-version -Duser.country=DE -Duser.language=de -XX:FlightRecorderOptions=stackdepth=128 Main
openjdk 11.0.22-internal 2024-01-16
OpenJDK Runtime Environment (build 11.0.22-internal+0-adhoc.pushkarnk.jdk11u-dev)
OpenJDK 64-Bit Server VM (build 11.0.22-internal+0-adhoc.pushkarnk.jdk11u-dev, mixed mode)
expected: 01.01.2020, 00:00:00
actual:   2020 Jan 1 00:00:00 

Testing: x86-64 build, tier1 tests with `release` and `fastdebug` builds.

[1] https://bugs.openjdk.org/browse/JDK-8244508
[2] https://mail.openjdk.org/pipermail/hotspot-jfr-dev/2020-March/001313.html

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Commit messages:
 - Backport f3519016c7766934d0aa3014b1a0593d91a0556c

Changes: https://git.openjdk.org/jdk11u-dev/pull/2121/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2121&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8244508
  Stats: 80 lines in 5 files changed: 68 ins; 0 del; 12 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2121.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2121/head:pull/2121

PR: https://git.openjdk.org/jdk11u-dev/pull/2121