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https://issues.apache.org/jira/browse/FLINK-838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14025997#comment-14025997
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Artem Tsikiridis commented on FLINK-838:
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Hello, here is an update for what happened the third week of GSoC and some
short-term plans.
*tl;dr version*
Worked on the jobclient for Hadoop on Flink. The interface is mostly
transparent to a Hadoop user, it's almost ready for local execution. Not all
issues have been addressed, though. Some hacks, especially to go more low level
(nephele) which probably should be reconsidered. Real Reporter. Figured out the
best way to map Accumulators to Counters. Tests need to be written this week.
*Slightly longer version*
I'm not sure if there's something to analyze extensively this week. The
JobClient for Hadoop to Flink is almost ready for local execution. In some
parts, I need to access the nepheleminicluster and I'm not particularly happy
with the way it is done, even though it works.
InputFormats for the driver:
As [~twalthr] said above once getParameter() is possible for interfaces it will
much cleaner. Until then, I'm doing what is described above (access the
InputSplit etc.).
*Next week*
- Hopefully be done with LocalExecution. Or better, not make a distinction at
all. Still need to figure out if this is possible.
- Accumulators --> Counters: Just make sure it's mapped everywhere.
- Parallelism --> I've tried several approaches (different execution
environments, dop etc.). Figure out what's more generic and best.
- Naming change in my branches! Get used to Flink.
- Tests, tests, tests: Very important in order to make the hadoop driver ready
for PR. Currently it is not.
Note:
I will submit the basic tasks branch for PR once FLINK-777 is merged. There are
tests, so I think it's ready. Hopefully after writing tests for the driver this
week, the hadoop driver branch goes into the same direction.
> 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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