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https://issues.apache.org/jira/browse/HDFS-6007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13935312#comment-13935312
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Colin Patrick McCabe commented on HDFS-6007:
--------------------------------------------
Looks good, I think we're getting close.
{code}
+ Legacy short-circuit local reads implementation
+ on which the clients directly open the HDFS block files is still available
+ for the platforms other than Linux.
{code}
Missing "the"
{code}
+ Because Legacy short-circuit local reads is insecure,
+ access to this feature is limited to the users listed in
+ the value of <<<dfs.block.local-path-access.user>>>.
{code}
I think this section needs to be moved after the section about
dfs.datanode.data.dir.perm. Otherwise it's not clear why the legacy SCR is
insecure.
> Update documentation about short-circuit local reads
> ----------------------------------------------------
>
> Key: HDFS-6007
> URL: https://issues.apache.org/jira/browse/HDFS-6007
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: documentation
> Reporter: Masatake Iwasaki
> Priority: Minor
> Attachments: HDFS-6007-0.patch, HDFS-6007-1.patch, HDFS-6007-2.patch,
> HDFS-6007-3.patch, HDFS-6007-4.patch
>
>
> updating the contents of "HDFS SHort-Circuit Local Reads" based on the
> changes in HDFS-4538 and HDFS-4953.
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