Github user mxm commented on a diff in the pull request:
https://github.com/apache/flink/pull/2657#discussion_r84501555
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/resourcemanager/ResourceManager.java
---
@@ -471,6 +498,149 @@ public void shutDownCluster(final ApplicationStatus
finalStatus, final String op
}
//
------------------------------------------------------------------------
+ // Testing methods
+ //
------------------------------------------------------------------------
+
+ /**
+ * Gets the leader session id of current resourceManager.
+ *
+ * @return return the leaderSessionId of current resourceManager, this
returns null until the current resourceManager is granted leadership.
+ */
+ @VisibleForTesting
+ UUID getLeaderSessionId() {
+ return leaderSessionId;
+ }
+
+ //
------------------------------------------------------------------------
+ // Internal methods
+ //
------------------------------------------------------------------------
+
+ private void clearState() {
+ jobManagerRegistrations.clear();
+ taskExecutors.clear();
+ slotManager.clearState();
+
+ try {
+ jobLeaderIdService.clear();
+ } catch (Exception e) {
+ onFatalError(new ResourceManagerException("Could not
properly clear the job leader id service.", e));
+ }
+
+ leaderSessionId = new UUID(0, 0);
--- End diff --
We probably want to set this to null again to work with the `isValid`
method (if we want to support null values for UUIDs). I would rather not allow
null values at all.
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