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The following commit(s) were added to refs/heads/master by this push:
new a9882132bf minor refactor: try to make JMX tests more resilient on CI
a9882132bf is described below
commit a9882132bf861330c7502730b923f115bc522fdb
Author: Paul King <[email protected]>
AuthorDate: Tue May 12 06:20:25 2026 +1000
minor refactor: try to make JMX tests more resilient on CI
---
.../groovy/jmx/builder/JmxListenerFactoryTest.groovy | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git
a/subprojects/groovy-jmx/src/test/groovy/groovy/jmx/builder/JmxListenerFactoryTest.groovy
b/subprojects/groovy-jmx/src/test/groovy/groovy/jmx/builder/JmxListenerFactoryTest.groovy
index 1fc06d3c2a..5e6e562bd3 100644
---
a/subprojects/groovy-jmx/src/test/groovy/groovy/jmx/builder/JmxListenerFactoryTest.groovy
+++
b/subprojects/groovy-jmx/src/test/groovy/groovy/jmx/builder/JmxListenerFactoryTest.groovy
@@ -22,10 +22,26 @@ import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test
import javax.management.ObjectName
+import java.util.logging.Level
+import java.util.logging.Logger
import static groovy.test.GroovyAssert.shouldFail
class JmxListenerFactoryTest {
+ static {
+ // Prime java.util.Timer's first-use init to absorb a JDK cgroup-v2
NPE that
+ // sporadically surfaces (CgroupV2Subsystem.getInstance) on
containerized CI
+ // when the JMX timer test spins up its housekeeper thread. The trip is
+ // environmental and one-shot — after the JVM stashes whatever cgroup
state
+ // it managed to resolve, later calls succeed.
+ try {
+ new java.util.Timer(true).cancel()
+ } catch (Throwable t) {
+ Logger.getLogger(JmxListenerFactoryTest.name).log(Level.FINE,
+ 'Primed java.util.Timer init absorbed exception (likely JDK
cgroup-v2)', t)
+ }
+ }
+
def builder
@BeforeEach
