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https://issues.apache.org/jira/browse/HDFS-4354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13543511#comment-13543511
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Colin Patrick McCabe commented on HDFS-4354:
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bq. Don't you mean newCount & ~STATUS_CLOSED_MASK?
It doesn't matter, since the STATUS_CLOSED_MASK bit won't make a number
negative.
> Create DomainSocket and DomainPeer and associated unit tests
> ------------------------------------------------------------
>
> Key: HDFS-4354
> URL: https://issues.apache.org/jira/browse/HDFS-4354
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, hdfs-client, performance
> Affects Versions: 2.0.3-alpha
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: 03-cumulative.patch
>
>
> Create {{DomainSocket}}, a JNI class which provides UNIX domain sockets
> functionality in Java. Also create {{DomainPeer}}, {{DomainPeerServer}}.
> This change also adds a unit test as well as {{TemporarySocketDirectory}}.
> Finally, this change adds a few C utility methods for handling JNI
> exceptions, such as {{newException}}.
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