[jdk17u-dev] RFR: 8309959: JFR: Display N/A for missing data amount [v2]

[Frederic Thevenet]

> This is a backport of [JDK-8309959](https://bugs.openjdk.org/browse/JDK-8309959): JFR: Display N/A for missing data amount.
> 
> It is a follow up to the backport of [JDK-8309550](): jdk.jfr.internal.Utils::formatDataAmount method should gracefully handle amounts equal to Long.MIN_VALUE
> 
> NB: [ValueFormatter.java](https://github.com/openjdk/jdk/commit/a1ab377d995dce4d636b908e96bd168dc3a9f3e5#diff-92129c25f421457539b76d9df74cdd34a12d8afd07e53612859e2edeee2c5758) that is changed in the original commit  got introduced with [JDK-8306703](https://bugs.openjdk.org/browse/JDK-8306703). which is JDK 21+ only and shouldn't get backported.
> 
> A run of the Jdk_jfr test suite via GHA is available here: https://github.com/fthevenet/jdk17u-dev/actions/runs/5267901714
> 
> Thanks

Frederic Thevenet has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase.

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Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/1438/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/1438/files/d7b25378..d7b25378

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1438&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1438&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1438.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1438/head:pull/1438

PR: https://git.openjdk.org/jdk17u-dev/pull/1438