bowenliang123 commented on code in PR #5662:
URL: https://github.com/apache/kyuubi/pull/5662#discussion_r1389135157
##########
kyuubi-server/src/main/scala/org/apache/kyuubi/engine/EngineRef.scala:
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@@ -319,4 +323,50 @@ private[kyuubi] class EngineRef(
}
}
}
+
+ def getAdaptivePoolId(poolSize: Int): Int = {
+ val sessionThreshold = conf.get(ENGINE_POOL_ADAPTIVE_SESSION_THRESHOLD)
+ val metricsSpace =
+
s"/metrics/${serverSpace}_${KYUUBI_VERSION}_${shareLevel}_${engineType}/$user"
+ DiscoveryClientProvider.withDiscoveryClient(conf) { client =>
+ tryWithLock(client) {
+ if (client.pathNonExists(metricsSpace)) {
+ client.create(metricsSpace, "PERSISTENT")
+ }
+ }
+ val metrics = client.getChildren(metricsSpace)
+ if (metrics.isEmpty) {
+ return Random.nextInt(poolSize)
+ } else {
+ engineType match {
+ case SPARK_SQL =>
+ val engineMetricsMap = metrics.map(p =>
+ new String(client.getData(s"$metricsSpace/$p"))
+ .split(";")
+ .map(_.split("=", 2))
+ .filter(_.length == 2)
+ .map(kv => (kv.head, kv.last.toInt))
+ .toMap)
+ if (engineMetricsMap.isEmpty) {
+ return Random.nextInt(poolSize)
+ } else {
+ val sortedEngineMetrics = engineMetricsMap.sortBy { map =>
+ (
+ map.getOrElse("openSessionCount", sessionThreshold),
+ map.getOrElse("activeTask", 0))
+ }
+ val candidate = sortedEngineMetrics.head
Review Comment:
Why pick the head without looping the candidates here?
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