ankitsultana commented on code in PR #10289:
URL: https://github.com/apache/pinot/pull/10289#discussion_r1110439823
##########
pinot-query-runtime/src/main/java/org/apache/pinot/query/runtime/executor/RoundRobinScheduler.java:
##########
@@ -79,128 +69,145 @@ public RoundRobinScheduler(long releaseTimeout) {
public RoundRobinScheduler(long releaseTimeoutMs, Supplier<Long> ticker) {
_releaseTimeout = releaseTimeoutMs;
_ticker = ticker;
+ _availableOpChainReleaseService =
Executors.newSingleThreadScheduledExecutor(r -> {
+ Thread t = new Thread(r);
+ t.setName(AVAILABLE_RELEASE_THREAD_NAME);
+ t.setDaemon(true);
+ return t;
+ });
+ if (releaseTimeoutMs > 0) {
+ _availableOpChainReleaseService.scheduleAtFixedRate(() -> {
+ for (Map.Entry<OpChainId, Long> entry : _available.entrySet()) {
+ if (Thread.interrupted()) {
+ LOGGER.warn("Thread={} interrupted. Scheduler may be shutting
down.", AVAILABLE_RELEASE_THREAD_NAME);
+ break;
+ }
+ OpChainId opChainId = entry.getKey();
+ if (_ticker.get() + _releaseTimeout > entry.getValue()) {
+ _lock.lock();
+ try {
+ if (_available.containsKey(opChainId)) {
+ _available.remove(opChainId);
+ _ready.offer(_aliveChains.get(opChainId));
Review Comment:
Nope. Because we ensure that only alive chains can be part of the available
map, because the transition to available is done in yield
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