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From "Dhruv Mahajan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (REEF-1456) Develop distributed counters framework in REEF
Date Mon, 27 Jun 2016 21:46:57 GMT

    [ https://issues.apache.org/jira/browse/REEF-1456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15351899#comment-15351899
] 

Dhruv Mahajan commented on REEF-1456:
-------------------------------------

[~markus.weimer] [~anupam128]  So I talked offline to [~chris.douglas] also about possibility
of implementing Distributed counters as a special Sink implementation and it seemed possible
at higher level. So my plan is to explore the feasibility of implementing equivalent of basic
version of metrics2 (heavy borrowing) followed by MapReduce style counters on top of it.

> Develop distributed counters framework in REEF
> ----------------------------------------------
>
>                 Key: REEF-1456
>                 URL: https://issues.apache.org/jira/browse/REEF-1456
>             Project: REEF
>          Issue Type: Sub-task
>          Components: REEF.NET
>         Environment: C#
>            Reporter: Dhruv Mahajan
>
> The aim of this JIRA is to develop distributed counters framework in REEF. Each task
can emit pairs of {counter name, incremental value} which are aggregated and sent to driver,
which can then aggregate them from all the tasks/ evaluators. The aggregation strategy can
be simple addition, most recently used, etc.  Via these counters, we can implement some common
metrics for ML - like amount (bytes) of data read, current loss function value etc.
> We will develop interfaces for Counters for evaluators and driver along with default
implementations and aggregation strategies.



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