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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5274) Add Tracing to HDFS
Date Mon, 03 Mar 2014 20:28:26 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5274?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HDFS-5274:
------------------------

    Attachment: HDFS-5274-11.txt

+ Fix double-close in Server.java
+ Minor fix of javadoc comment
+ Fix few places where we were not testing if trace enabled.

> Add Tracing to HDFS
> -------------------
>
>                 Key: HDFS-5274
>                 URL: https://issues.apache.org/jira/browse/HDFS-5274
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode, namenode
>    Affects Versions: 2.1.1-beta
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>         Attachments: HDFS-5274-0.patch, HDFS-5274-1.patch, HDFS-5274-10.patch, HDFS-5274-11.txt,
HDFS-5274-2.patch, HDFS-5274-3.patch, HDFS-5274-4.patch, HDFS-5274-5.patch, HDFS-5274-6.patch,
HDFS-5274-7.patch, HDFS-5274-8.patch, HDFS-5274-8.patch, HDFS-5274-9.patch, Zipkin   Trace
a06e941b0172ec73.png, Zipkin   Trace d0f0d66b8a258a69.png, ss-5274v8-get.png, ss-5274v8-put.png
>
>
> Since Google's Dapper paper has shown the benefits of tracing for a large distributed
system, it seems like a good time to add tracing to HDFS.  HBase has added tracing using HTrace.
 I propose that the same can be done within HDFS.



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