YARN-7397. Reduce lock contention in FairScheduler#getAppWeight()
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@ -369,17 +369,20 @@ public void update() {
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}
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public float getAppWeight(FSAppAttempt app) {
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try {
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double weight = 1.0;
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if (sizeBasedWeight) {
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readLock.lock();
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double weight = 1.0;
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if (sizeBasedWeight) {
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try {
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// Set weight based on current memory demand
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weight = Math.log1p(app.getDemand().getMemorySize()) / Math.log(2);
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} finally {
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readLock.unlock();
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}
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return (float)weight * app.getPriority().getPriority();
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} finally {
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readLock.unlock();
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}
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return (float)weight * app.getPriority().getPriority();
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}
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public Resource getIncrementResourceCapability() {
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