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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (APEXCORE-3) Ability for an operator to populate DAG at launch time
Date Fri, 18 Dec 2015 21:34:46 GMT

    [ https://issues.apache.org/jira/browse/APEXCORE-3?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15064800#comment-15064800
] 

ASF GitHub Bot commented on APEXCORE-3:
---------------------------------------

GitHub user tweise opened a pull request:

    https://github.com/apache/incubator-apex-core/pull/189

    APEXCORE-3 Module Support REBASED

    

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

    $ git pull https://github.com/tweise/incubator-apex-core devel-3

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

    https://github.com/apache/incubator-apex-core/pull/189.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 #189
    
----
commit e32adb9fa7b1b76016b815d00be7df947ed4f46f
Author: Vlad Rozov <v.rozov@datatorrent.com>
Date:   2015-09-24T03:30:51Z

    APEX-103 - Add module and dag interface in API

commit c804774b86ae4c09dbd7ae4abb84d9fd64c510b6
Author: bhupeshchawda <bhupeshchawda@gmail.com>
Date:   2015-10-06T07:04:24Z

    APEXCORE-194 Added support for proxy ports
    Added test cases.

commit 35b3c4e9544d89e57359844ccb9188aff0496461
Author: Tushar R. Gosavi <tushar@apache.org>
Date:   2015-10-06T08:18:53Z

    APEXCORE-105 Introduce module meta
    Inject properties through xml file on modules.

commit 3caeb0e38d3b66b58485dbb09b4666e6136ba11b
Author: chinmaykolhatkar <chinmay@datatorrent.com>
Date:   2015-10-07T09:36:36Z

    APEXCORE-104 Added flattening of module into parent DAG

commit dff6017847628e13743c071da1bbe0bbbf4089b2
Author: shubham <shubham-pathak22@github.com>
Date:   2015-11-17T06:40:08Z

    APEXCORE-144, APEXCORE-145 Rest api changes to view module information

----


> Ability for an operator to populate DAG at launch time
> ------------------------------------------------------
>
>                 Key: APEXCORE-3
>                 URL: https://issues.apache.org/jira/browse/APEXCORE-3
>             Project: Apache Apex Core
>          Issue Type: New Feature
>            Reporter: Amol Kekre
>            Assignee: Vlad Rozov
>            Priority: Critical
>
> Apex should have an operator API that lets the operator generate DAG during launch time.
This will mean the following
> - Logical DAG will have one operator. This is the operator that will generate a DAG underneath
> - Physical plan will have the DAG generated by the operator
> - Execution plan will mimic physical plan + container location etc.
> For example lets say we have three operators in a DAG (app) A->B->C
> B during launch time generates a DAG B1->B2->B3, then the physical plan will be
> A->B1->B2->B3->C
> This should work irrespective of number of ports, etc. A typical flattening. The operators
inside of B (B1, B2, B3) should have properties and attributes just as any. Users should be
able to access these at run time and compile time. B itself should support properties and
attributes that B1, B2, B3 can inherit from.
> This is a very critical feature as it will open up users to plug-in their own engines
and still take up complete operability support from Apex engine.



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