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dongjoon-hyun pushed a commit to branch main
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The following commit(s) were added to refs/heads/main by this push:
new d202306 [SPARK-57969] Use virtual thread for periodic GC scheduler
d202306 is described below
commit d2023062171d6f2163cdfd92343fe43a4bdeabfc
Author: Dongjoon Hyun <[email protected]>
AuthorDate: Mon Jul 6 12:08:44 2026 -0700
[SPARK-57969] Use virtual thread for periodic GC scheduler
### What changes were proposed in this pull request?
This PR aims to use a virtual thread factory for the periodic GC scheduler
thread in `SparkOperator`.
### Why are the changes needed?
The scheduled task (`SparkOperator::runSystemGc`) is short and periodic,
which is an ideal fit for a virtual thread. Virtual threads are always daemon
threads, so the existing daemon semantics are preserved.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Pass the CIs.
### Was this patch authored or co-authored using generative AI tooling?
Generated-by: Claude Fable 5
Closes #748 from dongjoon-hyun/SPARK-57969.
Authored-by: Dongjoon Hyun <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>
---
.../src/main/java/org/apache/spark/k8s/operator/SparkOperator.java | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git
a/spark-operator/src/main/java/org/apache/spark/k8s/operator/SparkOperator.java
b/spark-operator/src/main/java/org/apache/spark/k8s/operator/SparkOperator.java
index 911117a..fb3c7f2 100644
---
a/spark-operator/src/main/java/org/apache/spark/k8s/operator/SparkOperator.java
+++
b/spark-operator/src/main/java/org/apache/spark/k8s/operator/SparkOperator.java
@@ -124,11 +124,7 @@ public class SparkOperator {
if (periodicGcIntervalSeconds > 0L) {
this.periodicGcScheduler =
Executors.newSingleThreadScheduledExecutor(
- r -> {
- Thread t = new Thread(r, "spark-operator-periodic-gc");
- t.setDaemon(true);
- return t;
- });
+ Thread.ofVirtual().name("periodic-gc").factory());
this.periodicGcScheduler.scheduleAtFixedRate(
SparkOperator::runSystemGc,
periodicGcIntervalSeconds,
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