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Shut down executor threads after timeout to prevent JaCoCo EOFException #1303

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mrigger wants to merge 2 commits into from
+11 −2
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Shut down executor threads after timeout to prevent JaCoCo EOFException #1303

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e68d734
Shut down executor threads after timeout to prevent JaCoCo EOFException
mrigger Mar 26, 2026
becc2b3
Use daemon threads for worker and progress-monitor pools
mrigger Apr 14, 2026
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13 changes: 11 additions & 2 deletions src/sqlancer/Main.java
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Original file line number Diff line number Diff line change
Expand Up @@ -626,7 +626,11 @@ private String formatInteger(long intValue) {
}
}

ExecutorService execService = Executors.newFixedThreadPool(options.getNumberConcurrentThreads());
ExecutorService execService = Executors.newFixedThreadPool(options.getNumberConcurrentThreads(), r -> {
Thread t = new Thread(r);
t.setDaemon(true);
return t;
});
DBMSExecutorFactory<?, ?, ?> executorFactory = nameToProvider.get(jc.getParsedCommand());

if (options.performConnectionTest()) {
Expand Down Expand Up @@ -716,6 +720,7 @@ private boolean run(MainOptions options, ExecutorService execService,
execService.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);
} else {
execService.awaitTermination(options.getTimeoutSeconds(), TimeUnit.SECONDS);
execService.shutdownNow();
}
} catch (InterruptedException e) {
e.printStackTrace();
Expand Down Expand Up @@ -783,7 +788,11 @@ private static synchronized void startProgressMonitor() {
} else {
progressMonitorStarted = true;
}
final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1, r -> {
Thread t = new Thread(r, "SQLancer-progress-monitor");
t.setDaemon(true);
return t;
});
scheduler.scheduleAtFixedRate(new Runnable() {

private long timeMillis = System.currentTimeMillis();
Expand Down
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