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https://issues.apache.org/jira/browse/HDFS-5950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13912198#comment-13912198
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Colin Patrick McCabe commented on HDFS-5950:
--------------------------------------------
The test failure was another port-in-use issue on the test node.
bq. java.net.BindException: Problem binding to [0.0.0.0:50020]
java.net.BindException: Address already in use; For more details see:
http://wiki.apache.org/hadoop/BindException
The javac warning and findbugs warnings are from the use of
{{sun.misc.Unsafe}}, not real issues
> The DFSClient and DataNode should use shared memory segments to communicate
> short-circuit information
> -----------------------------------------------------------------------------------------------------
>
> Key: HDFS-5950
> URL: https://issues.apache.org/jira/browse/HDFS-5950
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, hdfs-client
> Affects Versions: 2.4.0
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: HDFS-5950.001.patch, HDFS-5950.003.patch,
> HDFS-5950.004.patch, HDFS-5950.006.patch, HDFS-5950.007.patch
>
>
> The DFSClient and DataNode should use the shared memory segments and unified
> cache added in the other HDFS-5182 subtasks to communicate short-circuit
> information.
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