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Posted to common-dev@hadoop.apache.org by "Amareshwari Sri Ramadasu (JIRA)" <ji...@apache.org> on 2007/12/10 13:54:43 UTC

[jira] Commented: (HADOOP-2208) Reduce frequency of Counter updates in the task tracker status

    [ https://issues.apache.org/jira/browse/HADOOP-2208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12550047 ] 

Amareshwari Sri Ramadasu commented on HADOOP-2208:
--------------------------------------------------

The attached patch sends updated counters. We mark counters as updated when they are created with a value or an increment operation is done. And sending the counters is capped at 1min.

> Reduce frequency of Counter updates in the task tracker status
> --------------------------------------------------------------
>
>                 Key: HADOOP-2208
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2208
>             Project: Hadoop
>          Issue Type: Improvement
>            Reporter: Amareshwari Sri Ramadasu
>            Assignee: Amareshwari Sri Ramadasu
>             Fix For: 0.16.0
>
>         Attachments: patch-2208.txt
>
>
> Currently,  We have counter updates from task tracker to job tracker on every heartbeat. Both counter name and the values are updated for every heartbeat. This can be improved by sending names and values for the first time and only the values after that.
> The frequency can be reduced by doing update only when the counters got changed. 

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