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https://issues.apache.org/jira/browse/HDFS-9505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15038570#comment-15038570
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Chris Nauroth commented on HDFS-9505:
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I haven't done a full read, but here are a few of the problems:
"There is a plan to support appending-writes to files in the future."
"HDFS does not yet implement user quotas or access permissions"
"Currently, automatic restart and failover of the NameNode software to
another machine is not supported."
> HDFS Architecture documentation needs to be refreshed.
> ------------------------------------------------------
>
> Key: HDFS-9505
> URL: https://issues.apache.org/jira/browse/HDFS-9505
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: documentation
> Reporter: Chris Nauroth
> Priority: Minor
>
> The HDFS Architecture document is out of date with respect to the current
> design of the system.
> http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html
> There are multiple false statements and omissions of recent features.
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