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https://issues.apache.org/jira/browse/HDFS-7054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15951461#comment-15951461
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Karan Mehta commented on HDFS-7054:
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bq. detach should be used here to pass responsibility to close the span to
ResponseProcessor thread when the packet is acked.
Does this mean that the {{writeTo}} span is potentially executing in a
different thread? I am trying to understand the perspective behind doing it.
bq. Throwing exception when detach is called on already detached TraceScope may
be improvement to avoid bug like this but HTrace 3 is no longer maintained.
Just FYI, I see that improvement in their master branch already now.
> Make DFSOutputStream tracing more fine-grained
> ----------------------------------------------
>
> Key: HDFS-7054
> URL: https://issues.apache.org/jira/browse/HDFS-7054
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Affects Versions: 2.6.0
> Reporter: Colin P. McCabe
> Assignee: Colin P. McCabe
> Fix For: 2.7.0
>
> Attachments: HDFS-7054.001.patch, HDFS-7054.002.patch,
> HDFS-7054.003.patch
>
>
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