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https://issues.apache.org/jira/browse/HDFS-4473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573017#comment-13573017
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Aaron T. Myers commented on HDFS-4473:
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Wow, good to know. What happens if the path is too long? Hopefully there's some
decent error. If not, we might consider checking for this during DN startup.
Regardless, that can be done as a separate JIRA. I'm going to commit this
momentarily.
> don't create domain socket unless we need it
> --------------------------------------------
>
> Key: HDFS-4473
> URL: https://issues.apache.org/jira/browse/HDFS-4473
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, hdfs-client, performance
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Priority: Minor
> Attachments: HDFS-4473.001.patch
>
>
> If {{dfs.domain.socket.path}} is set, but we don't have anything enabled
> which would need it (like {{dfs.client.read.shortcircuit}}), don't create the
> socket.
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