juliuszsompolski commented on code in PR #48034:
URL: https://github.com/apache/spark/pull/48034#discussion_r1751639015
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sql/connect/server/src/main/scala/org/apache/spark/sql/connect/service/SparkConnectExecutionManager.scala:
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@@ -61,6 +60,7 @@ private[connect] class SparkConnectExecutionManager() extends
Logging {
private var lastExecutionTimeMs: Option[Long] =
Some(System.currentTimeMillis())
Review Comment:
`lastExecutionTimeMs` was originally introduced so that some system managing
the Spark cluster could check if it's idle and for how long it's idle. Such a
monitoring system would call SparkConnectExecutionManager.listActiveExecutions
to either know what queries are running in the system, or otherwise learn since
when the system is idle.
I am not sure if it got to be used in practice.
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