yashmayya commented on code in PR #13628:
URL: https://github.com/apache/pinot/pull/13628#discussion_r1685974950
##########
pinot-broker/src/main/java/org/apache/pinot/broker/requesthandler/BaseSingleStageBrokerRequestHandler.java:
##########
@@ -478,8 +481,17 @@ protected BrokerResponse handleRequest(long requestId,
String query, @Nullable S
}
_brokerMetrics.addMeteredTableValue(rawTableName, BrokerMeter.QUERIES,
1);
+ _brokerMetrics.addMeteredGlobalValue(BrokerMeter.QUERIES_GLOBAL, 1);
_brokerMetrics.addValueToTableGauge(rawTableName,
BrokerGauge.REQUEST_SIZE, query.length());
+ if (!pinotQuery.isExplain() && _enableMultistageMigrationMetric) {
Review Comment:
Alternatively, we could potentially use a lock-free bounded queue (like
[BoundedFifoBuffer](https://commons.apache.org/proper/commons-collections/javadocs/api-3.2.2/org/apache/commons/collections/buffer/BoundedFifoBuffer.html)
from `commons-collections`) with some additional logic on our end to avoid
busy waiting on the consumer side when the buffer is empty. Or, we could use
Java's
[ConcurrentLinkedQueue](https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentLinkedQueue.html)
which is lock-free but unbounded and add some logic on our end to make it
bounded (and also the logic for avoiding busy waiting on the consumer side when
the queue is empty). Neither option is too appealing though 😄
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