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[CI] ParallelTopNOperatorTests testConcurrentReleaseOfSharedDictionaryThroughRealOperator failing #155014

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[CI] ParallelTopNOperatorTests testConcurrentReleaseOfSharedDictionaryThroughRealOperator failing#155014
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:StorageEngine/ES|QLTimeseries / metrics / logsdb capabilities in ES|QL>test-failureTriaged test failures from CITeam:StorageEngineneeds:riskRequires assignment of a risk label (low, medium, blocker)

Description

@elasticsearchmachine
elasticsearchmachine
opened on Jul 25, 2026

Build Scans:

Reproduction Line:

./gradlew ":x-pack:plugin:esql:compute:test" --tests "org.elasticsearch.compute.operator.topn.ParallelTopNOperatorTests.testConcurrentReleaseOfSharedDictionaryThroughRealOperator" -Dtests.seed=7F6316B25529386A -Dtests.locale=ne -Dtests.timezone=America/Sao_Paulo -Druntime.java=26

Applicable branches:
9.5

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

org.elasticsearch.common.util.concurrent.EsRejectedExecutionException: rejected execution of TimedRunnable{original=org.elasticsearch.compute.operator.topn.ParallelTopNOperatorTests$$Lambda/0x00000000815a44c0@605b7db1, creationTimeNanos=663630745747, startTimeNanos=0, finishTimeNanos=-1, failedOrRejected=false} on TaskExecutionTimeTrackingEsThreadPoolExecutor[name = race-pool/race_worker, queue capacity = 1024, task execution EWMA = 193nanos, total task execution time = 131.7ms, org.elasticsearch.common.util.concurrent.TaskExecutionTimeTrackingEsThreadPoolExecutor@10046b45[Running, pool size = 2, active threads = 1, queued tasks = 0, completed tasks = 44930]]

Issue Reasons:

  • [9.5] 1 consecutive failures in test testConcurrentReleaseOfSharedDictionaryThroughRealOperator
  • [9.5] 2 consecutive failures in step almalinux-8-aarch64_checkpart3_platform-support-arm
  • [9.5] 1 consecutive failures in step windows-2022_checkpart3_platform-support-windows
  • [9.5] 1 consecutive failures in pipeline elasticsearch-periodic-platform-support
  • [9.5] 5 failures in test testConcurrentReleaseOfSharedDictionaryThroughRealOperator (7.8% fail rate in 64 executions)
  • [9.5] 3 failures in step almalinux-8-aarch64_checkpart3_platform-support-arm (75.0% fail rate in 4 executions)
  • [9.5] 2 failures in pipeline elasticsearch-periodic-platform-support (100.0% fail rate in 2 executions)

Note:
This issue was created using new test triage automation. Please report issues or feedback to es-core-infra.

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    :StorageEngine/ES|QLTimeseries / metrics / logsdb capabilities in ES|QL>test-failureTriaged test failures from CITeam:StorageEngineneeds:riskRequires assignment of a risk label (low, medium, blocker)

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