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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-1629) Make metrics/aggregators accumulators available on driver
Date Mon, 06 Mar 2017 19:10:32 GMT

    [ https://issues.apache.org/jira/browse/BEAM-1629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15897853#comment-15897853
] 

ASF GitHub Bot commented on BEAM-1629:
--------------------------------------

GitHub user aviemzur opened a pull request:

    https://github.com/apache/beam/pull/2171

    [BEAM-1629] Make metrics/aggregators accumulators available on driver

    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).
    
    ---


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

    $ git pull https://github.com/aviemzur/beam fix-accumulator-singleton-instantiation-race

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

    https://github.com/apache/beam/pull/2171.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 #2171
    
----
commit 5c4cb5ee153fd7ca069d90d3ac558bceaf82678c
Author: Aviem Zur <aviemzur@gmail.com>
Date:   2017-03-06T18:48:48Z

    [BEAM-1629] Make metrics/aggregators accumulators available on driver

----


> Make metrics/aggregators accumulators available on driver
> ---------------------------------------------------------
>
>                 Key: BEAM-1629
>                 URL: https://issues.apache.org/jira/browse/BEAM-1629
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-spark
>            Reporter: Aviem Zur
>            Assignee: Aviem Zur
>
> Today aggregators and metrics accumulators are instantiated after pipeline is traversed,
and so, if code that runs on driver accesses these singletons but is not part of a closure
a {{NullPointerException}} is thrown.



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