akpatnam25 commented on code in PR #2367:
URL: 
https://github.com/apache/incubator-celeborn/pull/2367#discussion_r1520939595


##########
master/src/main/java/org/apache/celeborn/service/deploy/master/clustermeta/AbstractMetaManager.java:
##########
@@ -330,8 +338,10 @@ public void restoreMetaFromFile(File file) throws 
IOException {
               .peek(
                   workerInfo -> {
                     // Reset worker's network location with current master's 
configuration.
-                    workerInfo.networkLocation_$eq(
-                        
resolveMap.get(workerInfo.host()).get().getNetworkLocation());
+                    if 
(workerInfo.networkLocation().equals(NetworkTopology.DEFAULT_RACK)) {
+                      workerInfo.networkLocation_$eq(
+                          
resolveMap.get(workerInfo.host()).get().getNetworkLocation());

Review Comment:
   I don't think `workerInfo.networkLocation()` would ever be null since it is 
set to DEFAULT_RACK already: 
https://github.com/akpatnam25/incubator-celeborn/blob/CELEBORN-1313/common/src/main/scala/org/apache/celeborn/common/meta/WorkerInfo.scala#L45



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