HyukjinKwon commented on code in PR #44697:
URL: https://github.com/apache/spark/pull/44697#discussion_r1454489134
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connector/connect/server/src/main/scala/org/apache/spark/sql/connect/service/SessionHolder.scala:
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@@ -371,6 +373,14 @@ case class SessionHolder(userId: String, sessionId:
String, session: SparkSessio
private[connect] def listListenerIds(): Seq[String] = {
listenerCache.keySet().asScala.toSeq
}
+
+ /**
+ * An accumulator for Python executors.
+ *
+ * The accumulated results will be sent to the Python client via
observed_metrics message.
+ */
+ private[connect] val pythonAccumulator: Option[PythonAccumulator] =
+ Try(session.sparkContext.collectionAccumulator[Array[Byte]]).toOption
Review Comment:
BTW, if the profile is disabled, we shouldn't probably create this
accumulator to avoid performance issue.
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