hadoop-mapreduce-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Siqi Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5873) Measure bw of a single copy call and display the correct aggregated bw
Date Wed, 14 May 2014 20:00:19 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13997953#comment-13997953
] 

Siqi Li commented on MAPREDUCE-5873:
------------------------------------

[~sjlee0] Do you know what does this "-1 findbugs" mean

> Measure bw of a single copy call and display the correct aggregated bw
> ----------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5873
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5873
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.3.0
>            Reporter: Siqi Li
>            Assignee: Siqi Li
>         Attachments: MAPREDUCE-5873.v1.patch, MAPREDUCE-5873.v2.patch
>
>
> Currently ShuffleScheduler in ReduceTask JVM status displays bandwidth. Its definition
however is confusing because it captures the time where there is no copying because there
is a pause between when new wave of map outputs is available.
> current bw is definded as (bytes copied so far) / (total time in the copy phase so far)
> It would be more useful 
> 1) to measure bandwidth of a single copy call.
> 2) display aggregated bw as long as there is at least one fetcher is in the copy call.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message