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From "Masatake Iwasaki (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7055) Add tracing to DFSInputStream
Date Tue, 30 Sep 2014 10:04:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14153026#comment-14153026
] 

Masatake Iwasaki commented on HDFS-7055:
----------------------------------------

bq. It's fairly granular tracing

I attached screenshot of spans for reference. It shows trace of getting 1MB of file by FsShell
on pseudo distributed cluster with .004 patch. The trace consists of over 500 spans in this
case.

> Add tracing to DFSInputStream
> -----------------------------
>
>                 Key: HDFS-7055
>                 URL: https://issues.apache.org/jira/browse/HDFS-7055
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>    Affects Versions: 2.6.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-7055.002.patch, HDFS-7055.003.patch, HDFS-7055.004.patch, screenshot-get-1mb.png
>
>
> Add tracing to DFSInputStream.



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