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From "Chang Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9298) remove replica and not add replica with wrong genStamp
Date Fri, 23 Oct 2015 21:32:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14971893#comment-14971893
] 

Chang Li commented on HDFS-9298:
--------------------------------

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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