markrmiller commented on a change in pull request #689: SOLR-13489: Stop the 
leader from trying to rejoin the election on ses…
URL: https://github.com/apache/lucene-solr/pull/689#discussion_r288666793
 
 

 ##########
 File path: solr/core/src/java/org/apache/solr/cloud/ZkController.java
 ##########
 @@ -368,8 +368,15 @@ public void command() {
               }
 
               cc.cancelCoreRecoveries();
-
-              registerAllCoresAsDown(registerOnReconnect, false);
+              
+              try {
+                registerAllCoresAsDown(registerOnReconnect, false);
+              } catch (SessionExpiredException e) {
+                // zk has to reconnect
+                throw e;
+              } catch (Exception e) {
+                log.warn("Exception while trying to register all cores as 
DOWN", e);
 
 Review comment:
   I'll add a better comment to the code.

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