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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-22) DirectPipelineRunner: support for unbounded collections
Date Thu, 05 May 2016 00:46:12 GMT

    [ https://issues.apache.org/jira/browse/BEAM-22?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15271716#comment-15271716
] 

ASF GitHub Bot commented on BEAM-22:
------------------------------------

GitHub user tgroh opened a pull request:

    https://github.com/apache/incubator-beam/pull/289

    [BEAM-22] Mark CheckpointMark as volatile in UnboundedReadEvaluator

    Be sure to do all of the following to help us incorporate your contribution
    quickly and easily:
    
     - [ ] Make sure the PR title is formatted like:
       `[BEAM-<Jira issue #>] Description of pull request`
     - [ ] Make sure tests pass via `mvn clean verify`. (Even better, enable
           Travis-CI on your fork and ensure the whole test matrix passes).
     - [ ] Replace `<Jira issue #>` in the title with the actual Jira issue
           number, if there is one.
     - [ ] If this contribution is large, please file an Apache
           [Individual Contributor License Agreement](https://www.apache.org/licenses/icla.txt).
    
    ---
    
    The evaluator may be reused in a different thread, and updates to the
    checkpoint must be visible.

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

    $ git pull https://github.com/tgroh/incubator-beam unbounded_evaluator_close_before_requeue

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

    https://github.com/apache/incubator-beam/pull/289.patch

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

    This closes #289
    
----
commit e6ba15d451c9e3574a29ac0d51e6275893c9ee60
Author: Thomas Groh <tgroh@google.com>
Date:   2016-05-05T00:44:59Z

    Mark CheckpointMark as volatile in UnboundedReadEvaluator
    
    The evaluator may be reused in a different thread, and updates to the
    checkpoint must be visible.

----


> DirectPipelineRunner: support for unbounded collections
> -------------------------------------------------------
>
>                 Key: BEAM-22
>                 URL: https://issues.apache.org/jira/browse/BEAM-22
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-direct
>            Reporter: Davor Bonaci
>            Assignee: Thomas Groh
>
> DirectPipelineRunner currently runs over bounded PCollections only, and implements only
a portion of the Beam Model.
> We should improve it to faithfully implement the full Beam Model, such as add ability
to run over unbounded PCollections, and better resemble execution model in a distributed system.
> This further enables features such as a testing source which may simulate late data and
test triggers in the pipeline. Finally, we may want to expose an option to select between
"debug" (single threaded), "chaos monkey" (test as many model requirements as possible), and
"performance" (multi-threaded).
> more testing (chaos monkey) 
> Once this is done, we should update this StackOverflow question:
> http://stackoverflow.com/questions/35350113/testing-triggers-with-processing-time/35401426#35401426



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