shrirangmhalgi commented on code in PR #57257:
URL: https://github.com/apache/spark/pull/57257#discussion_r3601011699
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core/src/main/scala/org/apache/spark/scheduler/Schedulable.scala:
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@@ -21,16 +21,19 @@ import java.util.concurrent.ConcurrentLinkedQueue
import scala.collection.mutable.ArrayBuffer
+import org.apache.spark.annotation.DeveloperApi
import org.apache.spark.scheduler.SchedulingMode.SchedulingMode
/**
- * An interface for schedulable entities.
- * there are two type of Schedulable entities(Pools and TaskSetManagers)
+ * :: DeveloperApi ::
+ * An interface for schedulable entities (there are two types: Pools and
TaskSetManagers).
+ *
+ * Only the read-only scheduling properties below are part of the public API
surface; they are the
+ * inputs a custom [[SchedulingAlgorithm]] can inspect in its `comparator`.
The structural and
+ * mutating members are Spark-internal (`private[spark]`) and must not be used
by applications.
*/
-private[spark] trait Schedulable {
- var parent: Pool
- // child queues
- def schedulableQueue: ConcurrentLinkedQueue[Schedulable]
+@DeveloperApi
Review Comment:
Concern: `Schedulable` and `SchedulingAlgorithm` are currently
`private[spark]`. Widening to `@DeveloperApi` is an irreversible API commitment
- MiMa will enforce backward compatibility on every public member from here
forward. Is this surface is minimal and stable enough to expose permanently?
Typically new public APIs in core would need explicit sign-off from a commiter
/ PMC.
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