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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-10431) Extract scheduling-related code from SlotPool
Date Tue, 23 Oct 2018 16:12:01 GMT

    [ https://issues.apache.org/jira/browse/FLINK-10431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16660892#comment-16660892
] 

ASF GitHub Bot commented on FLINK-10431:
----------------------------------------

tillrohrmann commented on a change in pull request #6898: [FLINK-10431] Extraction of scheduling-related
code from SlotPool into preliminary Scheduler
URL: https://github.com/apache/flink/pull/6898#discussion_r227450458
 
 

 ##########
 File path: flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/AllocatedSlotActions.java
 ##########
 @@ -39,10 +38,23 @@
 	 * @param slotRequestId identifying the slot to release
 	 * @param slotSharingGroupId identifying the slot sharing group to which the slot belongs,
null if none
 	 * @param cause of the slot release, null if none
-	 * @return Acknowledge (future) after the slot has been released
+	 * @return Acknowledge after the slot has been released
 	 */
-	CompletableFuture<Acknowledge> releaseSlot(
+	@Deprecated
+	Acknowledge releaseSlot(
 		SlotRequestId slotRequestId,
 		@Nullable SlotSharingGroupId slotSharingGroupId,
 		@Nullable Throwable cause);
+
+	/**
+	 * Releases the slot with the given {@link SlotRequestId}. Additionally, one can provide
a cause for the slot release.
+	 *
+	 * @param slotRequestId identifying the slot to release
+	 * @param cause of the slot release, null if none
+	 * @return Acknowledge after the slot has been released
+	 */
+	@Nonnull
+	Acknowledge releaseSlot(
 
 Review comment:
   Same here with `void`?

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> Extract scheduling-related code from SlotPool
> ---------------------------------------------
>
>                 Key: FLINK-10431
>                 URL: https://issues.apache.org/jira/browse/FLINK-10431
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Distributed Coordination
>    Affects Versions: 1.7.0
>            Reporter: Stefan Richter
>            Assignee: Stefan Richter
>            Priority: Major
>              Labels: pull-request-available
>
> The other half of the current scheduling logic is the management of slot sharing and
is located in the SlotPool. We need to extract this logic into our new Scheduler component
from the previous step. This leaves us with a simpler SlotPool that mainly cares about obtaining,
holding, and releasing slots in interaction with a ResourceManager. The new Scheduler can
now identify slot sharing groups and interacts with the SlotPool.



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