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From "Artem Tsikiridis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-838) GSoC Summer Project: Implement full Hadoop Compatibility Layer for Stratosphere
Date Tue, 19 Aug 2014 09:47:18 GMT

    [ https://issues.apache.org/jira/browse/FLINK-838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14102081#comment-14102081

Artem Tsikiridis commented on FLINK-838:

Hi everybody,

I have prepared some documentation for hadoop compatibility. Here: https://github.com/atsikiridis/incubator-flink/blob/hadoop-docs/docs/hadoop_compatability.md
and https://github.com/atsikiridis/incubator-flink/blob/hadoop-docs/docs/internal_hadoop_compatibility.md

Moreover, I have pushed the {{ JobClient }}, and {{Accumulators}} / {{Counters}} related code
here: https://github.com/atsikiridis/incubator-flink/tree/final-client/flink-addons/flink-hadoop-compatibility/src/main/java/org/apache/flink/hadoopcompatibility/mapred.
It is all based on Fabian's work for the new Reduce operator.

So now with Fabian's amazing push with the new operator we can say that we support all Hadoop's
programming interfaces. Some still have some limitations (counters only obtained after job
completion and some, combiners grouping of values not there yet). Of course more testing is
always useful to fulfill the vision of having a full hadoop-compatibilty layer and run "everything
- Hadoop" on Flink. And of course, there is also the {{ mapreduce }} API, which also has a
lot of users and we should support.

Since the deadline for Google Summer of Code has just passed, I'd like to thank Fabian, Robert
and everybody else for helping me to get actively involved in Flink in the last couple of
months :) The community has been very vibrant and it was really exciting. At some times, it
wasn't very easy but you guys were always there :) It has been really nice and I feel that
I have learned a lot, both technically and how it feels to be in an open-source community
that is rapidly growing :) .

Of course, the deadline doesn't change much as I will still be around because it would be
a great pleasure to keep contributing to Flink and of course trying to fulfill the hadoopcompatibility
vision :). I'd say the GSoC was a nice kickstart.

Thank you all.

> GSoC Summer Project: Implement full Hadoop Compatibility Layer for Stratosphere
> -------------------------------------------------------------------------------
>                 Key: FLINK-838
>                 URL: https://issues.apache.org/jira/browse/FLINK-838
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: GitHub Import
>              Labels: github-import
>             Fix For: pre-apache
> This is a meta issue for tracking @atsikiridis progress with implementing a full Hadoop
Compatibliltiy Layer for Stratosphere.
> Some documentation can be found in the Wiki: https://github.com/stratosphere/stratosphere/wiki/%5BGSoC-14%5D-A-Hadoop-abstraction-layer-for-Stratosphere-(Project-Map-and-Notes)
> As well as the project proposal: https://github.com/stratosphere/stratosphere/wiki/GSoC-2014-Project-Proposal-Draft-by-Artem-Tsikiridis
> Most importantly, there is the following **schedule**:
> *19 May - 27 June (Midterm)*
> 1) Work on the Hadoop tasks, their Context and the mapping of Hadoop's Configuration
to the one of Stratosphere. By successfully bridging the Hadoop tasks with Stratosphere, we
already cover the most basic Hadoop Jobs. This can be determined by running some popular Hadoop
examples on Stratosphere (e.g. WordCount, k-means, join) (4 - 5 weeks)
> 2) Understand how the running of these jobs works (e.g. command line interface) for the
wrapper. Implement how will the user run them. (1 - 2 weeks).
> *27 June - 11 August*
> 1) Continue wrapping more "advanced" Hadoop Interfaces (Comparators, Partitioners, Distributed
Cache etc.) There are quite a few interfaces and it will be a challenge to support all of
them. (5 full weeks)
> 2) Profiling of the application and optimizations (if applicable)
> *11 August - 18 August*
> Write documentation on code, write a README with care and add more unit-tests. (1 week)
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/issues/838
> Created by: [rmetzger|https://github.com/rmetzger]
> Labels: core, enhancement, parent-for-major-feature, 
> Milestone: Release 0.7 (unplanned)
> Created at: Tue May 20 10:11:34 CEST 2014
> State: open

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