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https://issues.apache.org/jira/browse/FLINK-40675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated FLINK-40675:
-----------------------------------
Labels: pull-request-available test-stability (was: test-stability)
> SqlGatewayServiceITCase.testReleaseLockWhenFailedToSubmitOperation is unstable
> ------------------------------------------------------------------------------
>
> Key: FLINK-40675
> URL: https://issues.apache.org/jira/browse/FLINK-40675
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Gateway
> Reporter: sepuri sai krishna
> Priority: Major
> Labels: pull-request-available, test-stability
>
> testReleaseLockWhenFailedToSubmitOperation fails intermittently on master CI:
> {noformat}
> org.apache.flink.table.gateway.api.utils.SqlGatewayException: Failed to
> submitOperation.
> at
> org.apache.flink.table.gateway.service.SqlGatewayServiceImpl.submitOperation(SqlGatewayServiceImpl.java:150)
> at
> org.apache.flink.table.gateway.service.SqlGatewayServiceITCase.testReleaseLockWhenFailedToSubmitOperation(SqlGatewayServiceITCase.java:962)
> Caused by: org.apache.flink.table.gateway.api.utils.SqlGatewayException:
> Failed to submit the operation to the thread pool.
> Caused by: java.util.concurrent.RejectedExecutionException: Task ... rejected
> from java.util.concurrent.ThreadPoolExecutor@21fc80c2[Running, pool size =
> 500, active threads = 500, queued tasks = 0, completed tasks = 13]
> {noformat}
> It failed in 15 runs on 14 different days between 2026-07-23 and 2026-09-14,
> in the Default (Java 17), Java 11, Java 21, Hadoop 3.4.3 and
> AdaptiveScheduler profiles. Recent examples:
> * https://github.com/apache/flink/actions/runs/34798011374/job/103837838497
> * https://github.com/apache/flink/actions/runs/34666551863/job/103482148054
> * https://github.com/apache/flink/actions/runs/33724735397/job/100553329795
> FLINK-38439 reported the same failure in 2025 and was closed because it had
> only happened once.
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