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https://issues.apache.org/jira/browse/HDFS-17140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17751684#comment-17751684
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ASF GitHub Bot commented on HDFS-17140:
---------------------------------------

slfan1989 commented on code in PR #5924:
URL: https://github.com/apache/hadoop/pull/5924#discussion_r1285759414


##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPOfferService.java:
##########
@@ -291,9 +291,8 @@ public String toString() {
   void reportBadBlocks(ExtendedBlock block,
                        String storageUuid, StorageType storageType) {
     checkBlock(block);
+    ReportBadBlockAction rbbAction = new ReportBadBlockAction(block, 
storageUuid, storageType);

Review Comment:
   Is it necessary to optimize this place? This could potentially cause issues, 
for example, if we have seven namespaces [NS1~NS7] sharing a single object. If 
we make changes to the ReportBadBlockAction in NS1, would it also affect the 
other namespaces?





> Optimize the BPOfferService.reportBadBlocks() method
> ----------------------------------------------------
>
>                 Key: HDFS-17140
>                 URL: https://issues.apache.org/jira/browse/HDFS-17140
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Liangjun He
>            Assignee: Liangjun He
>            Priority: Minor
>              Labels: pull-request-available
>
> The current BPOfferService.reportBadBlocks() method can be optimized by 
> moving the creation of the rbbAction object outside the loop.



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