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Ran 28 Nov 2021 03:44AM UTC

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Committed 28 Nov 2021 01:46AM UTC coverage: 93.932% (-0.01%) from 93.942%

Job # #2688.1

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push

github-actions

Committed by

ben-manes

Commit Message

Detect JDK-8274349 and fallback to a same-thread executor

In certain scenarios the common pool is broken and will never execute
a subitted task. This causes behavior like async caches, evictions,
removal notifications, and refresh after write to not function. The
application's own usage will not work either so this only fails less.

Affected users are encouraged to use one of the following workarounds:
- set the property `java.util.concurrent.ForkJoinPool.common.parallelism`
  to 1
- do not use `-XX:ActiveProcessorCount=1` as a startup flag
- do not use a container with 1 cpu

For more details see:
  ForkJoinPool.commonPool() does not work with 1 CPU
  https://bugs.openjdk.java.net/browse/JDK-8274349

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