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From "Ari Rabkin (JIRA)" <>
Subject [jira] Updated: (CHUKWA-282) Demux should output detailed per-operation ClientTrace records
Date Sun, 12 Jul 2009 21:17:14 GMT


Ari Rabkin updated CHUKWA-282:

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

I just committed this; thanks Jiaqi.

> Demux should output detailed per-operation ClientTrace records
> --------------------------------------------------------------
>                 Key: CHUKWA-282
>                 URL:
>             Project: Hadoop Chukwa
>          Issue Type: Improvement
>          Components: Data Processors
>    Affects Versions: 0.2.0
>            Reporter: Jiaqi Tan
>            Assignee: Jiaqi Tan
>            Priority: Minor
>             Fix For: 0.2.0
>         Attachments: CHUKWA-282.patch
> Currently, the ClientTrace reducer in Demux summarizes client trace operations to produce
aggregate statistics for each type of operation (e.g. total bytes of local HDFS reads, total
bytes of local HDFS writes). However, more sophisticated algorithms and visualization will
need more detailed information such as amount of reads/writes to/from every pair of hosts.
The ClientTrace reducer should also output the unsummarized, raw ClientTrace data so they
can be used for analysis/visualization.

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