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https://issues.apache.org/jira/browse/HDFS-3214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-3214:
------------------------------

    Attachment: hdfs-3214.txt

Good point. New patch switches the ids to be sequential by their declaration 
order
                
> InterDatanodeProtocolServerSideTranslatorPB doesn't handle null response from 
> initReplicaRecovery
> -------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3214
>                 URL: https://issues.apache.org/jira/browse/HDFS-3214
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 2.0.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Blocker
>         Attachments: hdfs-3214.txt, hdfs-3214.txt
>
>
> The initReplicaRecovery function may return null to indicate that the block 
> doesn't exist on the local node. However, the translator doesn't handle this 
> case, which results in NPEs.

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