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https://issues.apache.org/jira/browse/HDFS-5746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13886922#comment-13886922
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Colin Patrick McCabe commented on HDFS-5746:
--------------------------------------------
TestAuditLogs failure is HDFS-5831, not related to this change.
The other failure is opening too many fds (probably, the jenkins boxes have a
lower fd limit than I set locally.) I reduced the number of fds I'm opening
during the test.
> add ShortCircuitSharedMemorySegment
> -----------------------------------
>
> Key: HDFS-5746
> URL: https://issues.apache.org/jira/browse/HDFS-5746
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, hdfs-client
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Fix For: 3.0.0
>
> Attachments: HDFS-5746.001.patch, HDFS-5746.002.patch,
> HDFS-5746.003.patch, HDFS-5746.004.patch, HDFS-5746.005.patch,
> HDFS-5746.006.patch, HDFS-5746.007.patch
>
>
> Add ShortCircuitSharedMemorySegment, which will be used to communicate
> information between the datanode and the client about whether a replica is
> mlocked.
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