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https://issues.apache.org/jira/browse/FLINK-4516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15449220#comment-15449220
]
ASF GitHub Bot commented on FLINK-4516:
---------------------------------------
Github user mxm commented on a diff in the pull request:
https://github.com/apache/flink/pull/2427#discussion_r76810632
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/rpc/resourcemanager/ResourceManager.java
---
@@ -116,4 +142,78 @@ public SlotAssignment requestSlot(SlotRequest
slotRequest) {
return new TaskExecutorRegistrationSuccess(new InstanceID(),
5000);
}
+
+ /**
+ * Callback method when current resourceManager is granted leadership
+ *
+ * @param newLeaderSessionID unique leadershipID
+ */
+ void handleGrantLeadership(final UUID newLeaderSessionID) {
+ runAsync(new Runnable() {
+ @Override
+ public void run() {
+ log.info("ResourceManager {} was granted
leadership with leader session ID {}", getAddress(), newLeaderSessionID);
+ leaderSessionID = newLeaderSessionID;
+ // confirming the leader session ID might be
blocking,
+
leaderElectionService.confirmLeaderSessionID(newLeaderSessionID);
+ }
+ });
+ }
+
+ /**
+ * Callback method when current resourceManager lose leadership.
+ */
+ void handleRevokeLeadership() {
--- End diff --
This method can be private.
> ResourceManager leadership election
> -----------------------------------
>
> Key: FLINK-4516
> URL: https://issues.apache.org/jira/browse/FLINK-4516
> Project: Flink
> Issue Type: Sub-task
> Components: Cluster Management
> Reporter: zhangjing
> Assignee: zhangjing
>
> 1. When a resourceManager is started, it starts the leadership election
> service first and take part in contending for leadership
> 2. Every resourceManager contains a ResourceManagerLeaderContender, when it
> is granted leadership, it will start SlotManager and other main components.
> when it is revoked leadership, it will stop all its components and clear
> everything.
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