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https://issues.apache.org/jira/browse/HDFS-279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14069331#comment-14069331
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Allen Wittenauer commented on HDFS-279:
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Stale issue?

> Generation stamp value should be validated when creating a Block
> ----------------------------------------------------------------
>
>                 Key: HDFS-279
>                 URL: https://issues.apache.org/jira/browse/HDFS-279
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Tsz Wo Nicholas Sze
>
> In hdfs, generation stamps < GenerationStamp.FIRST_VALID_STAMP are reserved 
> values but not valid generation stamps.  Incorrect uses of the reserved 
> values may cause unexpected behavior.  We should  validate generation stamp 
> when creating a Block.



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