suztomo edited a comment on pull request #14527:
URL: https://github.com/apache/beam/pull/14527#issuecomment-819028655
`:sdks:java:core:compileTestJava` failed:
```
> Task :sdks:java:core:compileTestJava
/Users/suztomo/beam/sdks/java/core/src/test/java/org/apache/beam/sdk/metrics/MetricsTest.java:450:
error: incompatible types: inferred type does not conform to lower bound(s)
assertThat(
^
inferred: MetricResult<DistributionResult>
lower bound(s): CAP#1,MetricResult<DistributionResult>
where CAP#1 is a fresh type-variable:
CAP#1 extends Object super: MetricResult<DistributionResult> from
capture of ? super MetricResult<DistributionResult>
```
MetricsTest.java:450 has
```
assertThat(
metrics.getDistributions(),
anyOf(
// Step names are different for portable and non-portable
runners.
hasItem(
(Matcher<MetricResult<DistributionResult>>)
distributionMinMax(
NAMESPACE,
"bundle",
"MyStep1/ParMultiDo(Anonymous)",
10L,
40L,
isCommitted)),
hasItem(
(Matcher<MetricResult<DistributionResult>>)
distributionMinMax(
NAMESPACE,
"bundle",
"MyStep1-ParMultiDo-Anonymous-",
10L,
40L,
isCommitted))));
```
This problem didn't occur with protobuf-java 3.14.0.
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