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https://issues.apache.org/jira/browse/HDFS-9298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14971893#comment-14971893
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Chang Li commented on HDFS-9298:
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Thanks for valuable review [~jingzhao]! Understand the situation you describe.
But could we check if replica has genStamp lesser than the current one?
> remove replica and not add replica with wrong genStamp
> ------------------------------------------------------
>
> Key: HDFS-9298
> URL: https://issues.apache.org/jira/browse/HDFS-9298
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Chang Li
> Assignee: Chang Li
> Attachments: HDFS-9298.1.patch
>
>
> currently, in setGenerationStampAndVerifyReplicas, replica with wrong gen
> stamp is not really removed, only StorageLocation of that replica is removed.
> Moreover, we should check genStamp before addReplicaIfNotPresent
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