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NIFI-362: Ensure that we synchronize on ScheduleState before modifying it

This commit is contained in:
Mark Payne 2015-02-22 10:59:14 -05:00
parent 4cc106a54d
commit f1e74cc041
1 changed files with 14 additions and 4 deletions
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10
nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/scheduling/TimerDrivenSchedulingAgent.java
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@ -132,9 +132,14 @@ public class TimerDrivenSchedulingAgent implements SchedulingAgent {
final long yieldNanos = TimeUnit.MILLISECONDS.toNanos(yieldMillis);
final ScheduledFuture<?> newFuture = flowEngine.scheduleWithFixedDelay(this, yieldNanos,
connectable.getSchedulingPeriod(TimeUnit.NANOSECONDS), TimeUnit.NANOSECONDS);
synchronized (scheduleState) {
if ( scheduleState.isScheduled() ) {
scheduleState.replaceFuture(scheduledFuture, newFuture);
futureRef.set(newFuture);
}
}
}
} else if ( shouldYield ) {
// Component itself didn't yield but there was no work to do, so the framework will choose
// to yield the component automatically for a short period of time.
@ -149,11 +154,16 @@ public class TimerDrivenSchedulingAgent implements SchedulingAgent {
if (scheduledFuture.cancel(false)) {
final ScheduledFuture<?> newFuture = flowEngine.scheduleWithFixedDelay(this, NO_WORK_YIELD_NANOS,
connectable.getSchedulingPeriod(TimeUnit.NANOSECONDS), TimeUnit.NANOSECONDS);
synchronized (scheduleState) {
if ( scheduleState.isScheduled() ) {
scheduleState.replaceFuture(scheduledFuture, newFuture);
futureRef.set(newFuture);
}
}
}
}
}
};
// Schedule the task to run