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https://issues.apache.org/jira/browse/HDFS-16776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17608061#comment-17608061
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ASF GitHub Bot commented on HDFS-16776:
---------------------------------------

Kidd53685368 commented on code in PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#discussion_r977166318


##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/StripedReconstructor.java:
##########
@@ -288,6 +292,10 @@ RawErasureDecoder getDecoder() {
     return decoder;
   }
 
+  int getIndicesNum(){
+    return liveIndiceNum;
+  }
+

Review Comment:
   Thanks, this is absolutely a better substitution.





> Erasure Coding: The length of targets should be checked when DN gets a 
> reconstruction task
> ------------------------------------------------------------------------------------------
>
>                 Key: HDFS-16776
>                 URL: https://issues.apache.org/jira/browse/HDFS-16776
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Kidd5368
>            Assignee: Kidd5368
>            Priority: Major
>              Labels: pull-request-available
>
> The length of targets should be checked when DN gets a EC reconstruction 
> task.For some reason (HDFS-14768, HDFS-16739) , the length of targets will be 
> larger than additionalReplRequired which causes some elements in targets get 
> the default value 0. It may trigger the bug which leads to the data 
> corrupttion just like HDFS-14768.



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