tomscut commented on a change in pull request #3366:
URL: https://github.com/apache/hadoop/pull/3366#discussion_r707841118



##########
File path: 
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/server/protocol/StorageReport.java
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@@ -48,6 +49,8 @@ public StorageReport(DatanodeStorage storage, boolean failed, 
long capacity,
     this.nonDfsUsed = nonDfsUsed;
     this.remaining = remaining;
     this.blockPoolUsed = bpUsed;
+    this.blockPoolUsagePercent = capacity == 0 ? 0.0f :

Review comment:
       Thanks @tasanuma for your review. Thus can prevent some anomalies. I 
will update it soon. 




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