lei-xia commented on a change in pull request #1066:
URL: https://github.com/apache/helix/pull/1066#discussion_r459658076
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File path: helix-core/src/main/java/org/apache/helix/HelixManager.java
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@@ -419,6 +420,17 @@ void
addExternalViewChangeListener(org.apache.helix.ExternalViewChangeListener l
*/
Long getSessionStartTime();
+ /**
+ * Checks whether the cluster manager is leader and returns the session ID
associated to the
+ * connection of cluster data store, if and only if it is leader.
+ *
+ * @return {@code Optional<String>} session ID is present inside the {@code
Optional} object
+ * if the cluster manager is leader. Otherwise, returns an empty {@code
Optional} object.
+ */
+ default Optional<String> getSessionIdIfLead() {
Review comment:
getSessionIdIfLeader? Also, why do we need this if we already have
manager.getSessionId?
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