MetricsTest$AttemptedMetricTests.testAllAttemptedMetrics is flaky on DirectRunner

[damccorm]

Occasionally flakes with the log:

ava.lang.AssertionError: 
Expected: a collection containing MetricResult{inNamespace="org.apache.beam.sdk.metrics.MetricsTest",
name="bundle", step="MyStep1", attemptedMin=<10L>, attemptedMax=<40L>}
     but: mismatches were: [MetricResult{inKey:
<MyStep1:org.apache.beam.sdk.metrics.MetricsTest:bundle> != <MyStep1/ParMultiDo(Anonymous):org.apache.beam.sdk.metrics.MetricsTest:input>attemptedMin:
<10L> != <5L>attemptedMax: <40L> != <13L>}, MetricResult{inKey: <MyStep1:org.apache.beam.sdk.metrics.MetricsTest:bundle>
!= <MyStep2:org.apache.beam.sdk.metrics.MetricsTest:input>attemptedMin: <10L> != <5L>attemptedMax: <40L>
!= <13L>}, MetricResult{inKey: <MyStep1:org.apache.beam.sdk.metrics.MetricsTest:bundle> != <MyStep1/ParMultiDo(Anonymous):org.apache.beam.sdk.metrics.MetricsTest:bundle>attemptedMax:
<40L> != <10L>}]

Recent failures can be found at https://ci-beam.apache.org/job/beam_PreCommit_Java_Commit/lastCompletedBuild/testReport/org.apache.beam.sdk.metrics/MetricsTest$AttemptedMetricTests/testAllAttemptedMetrics/history/

Imported from Jira BEAM-7827. Original Jira may contain additional context.
Reported by: janl.

[kileys]

Ran 100x times with no repro and no recent failures on Jenkins. Closing this issue