RFR: 8264524: jdk/internal/platform/docker/TestDockerMemoryMetrics.java fails due to swapping not working [v3]

[Jie Fu]

> Hi all,
> 
> jdk/internal/platform/docker/TestDockerMemoryMetrics.java fails on some of our testing platforms.
> This is because testMemoryFailCount [1] fails due to OOM killed.
> This test fails to avoid OOM killed [2] if memory.failcnt is always 0.
> 
> The fix will print "Not OOM killed" if OOM killed doesn't happen.
> And also fix another bug if the test get returned here [3].
> 
> Testing: 
>   - jdk/internal/platform/docker/ hotspot/jtreg/containers on Linux/x64
> 
> Thanks.
> Best regards,
> Jie
> 
> [1] https://github.com/openjdk/jdk/blob/master/test/jdk/jdk/internal/platform/docker/TestDockerMemoryMetrics.java#L80
> [2] https://github.com/openjdk/jdk/blob/master/test/jdk/jdk/internal/platform/docker/MetricsMemoryTester.java#L87
> [3] https://github.com/openjdk/jdk/blob/master/test/jdk/jdk/internal/platform/docker/MetricsMemoryTester.java#L96

Jie Fu has updated the pull request incrementally with one additional commit since the last revision:

  Update the comment

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3286/files
  - new: https://git.openjdk.java.net/jdk/pull/3286/files/3e1c446d..101b90d0

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3286&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3286&range=01-02

  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3286.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3286/head:pull/3286

PR: https://git.openjdk.java.net/jdk/pull/3286