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https://issues.apache.org/jira/browse/HADOOP-3573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devaraj Das updated HADOOP-3573:
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    Fix Version/s:     (was: 0.19.0)

> Remove code related to conversion of name-node and data-node storage 
> directories to the format introduced in hadoop 0.13
> ------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-3573
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3573
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.17.0
>            Reporter: Konstantin Shvachko
>            Assignee: Raghu Angadi
>
> Hadoop 0.18 does not support direct HDFS upgrades from versions 0.13 or 
> earlier as stated in HADOOP-2797.
> A 2 step upgrade is required in this case first from 0.x <= 0.13 to one of 
> version 0.14 through 0.17 and then to 0.18.
> This implies that current hdfs does not need to support code related to 
> conversions of the old (pre 0.13) storage layout to the current one 
> introduced in 0.13 (see. HADOOP-702).

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