Hexiaoqiao commented on code in PR #5353:
URL: https://github.com/apache/hadoop/pull/5353#discussion_r1198896990
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/ReplicaMap.java:
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@@ -178,13 +178,13 @@ void mergeAll(ReplicaMap other) {
for (ReplicaInfo replicaInfo : replicaInfos) {
replicaSet.add(replicaInfo);
}
+ if (curSet == null) {
Review Comment:
This condition should be following here,
```
if (curSet == null && !replicaSet.isEmpty()) {
// Add an entry for block pool if it does not exist already
curSet = new LightWeightResizableGSet<>();
map.put(bp, curSet);
}
```
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