[8.19] ESQL: Fix CCS exchange sink cleanup (#143325)#143436
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elasticsearchmachine merged 1 commit intoelastic:8.19from Mar 3, 2026
Merged
[8.19] ESQL: Fix CCS exchange sink cleanup (#143325)#143436elasticsearchmachine merged 1 commit intoelastic:8.19from
elasticsearchmachine merged 1 commit intoelastic:8.19from
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The cross-cluster exchange sink in ClusterComputeHandler was not explicitly finished on normal completion. It relied on task cancellation or the InactiveSinksReaper for cleanup, unlike data node sinks which finish immediately via completion listeners. Add a finishSinkHandler call to the exchange sink's completion listener in runComputeOnRemoteCluster, matching the pattern used by DataNodeComputeHandler. Also add an @after assertion to CrossClusterQueryIT to verify that all exchange sinks across clusters are released within 5 seconds of each test.
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Backports the following commits to 8.19: