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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1110) Add a serial collection-based execution mode
Date Thu, 02 Oct 2014 09:19:34 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14156259#comment-14156259

ASF GitHub Bot commented on FLINK-1110:

GitHub user StephanEwen opened a pull request:


    [FLINK-1110] Add collection-based execution mode to flink APIs

    This modes executes programs straightforwardly as collections, with minimal resource footprint
and virtually no latency (such as starting threads, RPC services, actor systems, ...)

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/StephanEwen/incubator-flink collections

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #139
commit 51f0d287172cdec848f267ee75213192161bd89b
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-09-22T13:12:58Z

    [FLINK-1110] Framework for collection-based execution

commit 7ac4501a8b8ba9846a54d85d6ee7a9635496c0e4
Author: Aljoscha Krettek <aljoscha.krettek@gmail.com>
Date:   2014-09-22T15:47:19Z

    [FLINK-1110] Add Collection-Based execution for Reduce Operators
    Also fix some bugs resulting from moving stuff between packages

commit 916f6f003c43ad2d71d55c4b60fd4dc500a8b544
Author: Ufuk Celebi <uce@apache.org>
Date:   2014-09-22T15:54:34Z

    [FLINK-1110] Add execution on collections for flatMap

commit a8ba39348e8263c7579f3239e2753b42c38b6e60
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-09-22T16:12:58Z

    [FLINK-1110] Fix MapOperator execution and added simple test

commit 79ffa693ed814e5ba83bfdff3e99f6900432dd2b
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-09-22T17:18:33Z

    [FLINK-1110] Implement collection-based Cross

commit f5d3b02167c081af7e2e23de97f8678ac8dc443d
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-09-22T17:18:54Z

    [FLINK-1110] Implement broadcast variables for collection-based execution

commit c997e65f0c793cb706e63c6cc63bef1eec5b5e4e
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-09-22T21:23:17Z

    [FLINK-1110] Implement collection-based execution for mapPartition.
    Make groupReduce code compliant with pre-java-8 versions, fix java8 tests with moved type
information classes.
    Fix Various warnings.

commit e39963a912d0d29d0c572a1554495939681b6cc9
Author: Till Rohrmann <trohrmann@apache.org>
Date:   2014-09-22T15:30:14Z

    [FLINK-1110] Started implementing the JoinOperatorBase.
    Implemented JoinOperatorBase and test cases.

commit 9ad87ea5d3c14bf486f6e85af64fb0c191190570
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-09-22T23:50:05Z

    [FLINK-1110] Implement collection-based execution for bulk iterations

commit 97b5da1b14e91ef0c47ab4cb838ab51fe8544a39
Author: Ufuk Celebi <uce@apache.org>
Date:   2014-09-23T12:48:07Z

    [FLINK-1110] Implement collection-based execution for coGroup

commit 1873df6633017370bc7e45619f142abe0728b835
Author: Aljoscha Krettek <aljoscha.krettek@gmail.com>
Date:   2014-09-23T13:16:33Z

    [FLINK-1110] Add createCollectionEnvironment for Scala

commit b13cb2fdab7a9c9caf4d4cba780dcc2d4ab14e4d
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-09-23T21:47:59Z

    [FLINK-1110] Adjusted test base to run programs both with local executor and collection

commit e8f5f8d1728c5bdaff0d34d2770c9aa3937e6165
Author: Aljoscha Krettek <aljoscha.krettek@gmail.com>
Date:   2014-09-26T14:37:00Z

    [FLINK-1110] Implement Collection-Based Execution for Delta Iterations

commit 9a9e95511d26c10e32e9693089478739e158f091
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-09-30T19:32:54Z

    [FLINK-1110] By default, collection-based execution behaves mutable-object safe.

commit 485272c3fabeb9dc1c84d77782fdb9d9c620a18c
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-09-30T21:14:53Z

    [FLINK-1110] Adjust tests and fix various issues in the collection-based execution.

commit 3fef9e502ae9fc3ecd2a5bf28f7532a4449988ec
Author: Ufuk Celebi <uce@apache.org>
Date:   2014-10-01T09:26:40Z

    [FLINK-1110] Fix IndexOutOfBoundsException in ListKeyGroupedIterator
    Occured when calling nextKey() and iterator not consumed with *last* key group.

commit a2784f6740a7b03d837138bd18955b07f9ed37c6
Author: Aljoscha Krettek <aljoscha.krettek@gmail.com>
Date:   2014-10-01T15:43:38Z

    [FLINK-1110] Fix Reduce and GroupReduce Test Failures

commit 4bc5fb9c8a46f05f848771263a5d78b882ca1e13
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-10-01T18:11:52Z

    [FLINK-1110] Fix mutable object safe mode for data sources in collection-based execution

commit fc19fb3fa3e2086d046cc455b4428f36c72ffbb9
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-10-01T19:42:12Z

    [FLINK-1110] Add iteration aggregators to collection based execution

commit 0a405541939895906e4a18eae67bdc07e7d7a2df
Author: Stephan Ewen <sewen@apache.org>
Date:   2014-10-01T23:54:26Z

    [FLINK-1110] Fix HadoopInputFormat t work without prior serialization.


> Add a serial collection-based execution mode
> --------------------------------------------
>                 Key: FLINK-1110
>                 URL: https://issues.apache.org/jira/browse/FLINK-1110
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: Stephan Ewen
>            Priority: Minor
> Summary of mailing list thread that the issue is based upon
> Since Flink is a layered system, programs written against the APIs can be executed in
a variety of ways. In this case, we just run the functions single-threaded directly on the
Java collections, instead of firing up a memory management, IPC, parallel workers, data movement,
etc. That gives programs a minimal execution footprint (like in the Java8 streams API) for
small data. The idea is to enable users to use the same program in all sorts of different
> The collection execution should sit below the common API, so both Java and Scala API
can use it.

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