Mailing-List: contact commits-help@beam.incubator.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@beam.incubator.apache.org
Date: Wed, 14 Dec 2016 18:12:58 +0000 (UTC)
From: "Amit Sela (JIRA)" <jira@apache.org>
To: commits@beam.incubator.apache.org
Message-ID: <JIRA.13015996.1477608228000.521579.1481739178343@Atlassian.JIRA>
In-Reply-To: <JIRA.13015996.1477608228000@Atlassian.JIRA>
References: <JIRA.13015996.1477608228000@Atlassian.JIRA> <JIRA.13015996.1477608228355@arcas>
Subject: [jira] [Updated] (BEAM-853) Force streaming execution on batch
 pipelines for testing.
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
archived-at: Wed, 14 Dec 2016 18:13:03 -0000


     [ https://issues.apache.org/jira/browse/BEAM-853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Amit Sela updated BEAM-853:
---------------------------
    Description: 
The SDK's {{streaming}} tests actually use a {{BoundedReadFromUnboundedSource}} while "forcing" a streaming pipeline (although the input is {{Read.Bounded}}).

The {{TestSparkRunner}} should be able to use the underlying {{UnboundedSource}} to execute a streaming pipeline.

  was:
Beam's {{RunnableOnService}} tests for runners are written with bounded reads so the SparkRunner should force a streaming pipeline on an "all-batch" pipeline. 

Currently the runner will decide the translation (batch/streaming) according to the input PCollection boundness (in case of input, according to output).

One way to overcome this would be to override this behaviour in {{TestSparkRunner}}.
Another challenge is the implementation itself - we could clearly read the RDD and create a single-RDD-DStream of it (following RDDs will be empty) but this will miss the point of testing streaming pipelines both for testing the execution of {{Read.Unbounded}} and for testing across-microbatches (tests state management).

Finally, we have to consider how this is going to play nicely with {{SplittableDoFn}}.


> Force streaming execution on batch pipelines for testing.
> ---------------------------------------------------------
>
>                 Key: BEAM-853
>                 URL: https://issues.apache.org/jira/browse/BEAM-853
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-spark
>            Reporter: Amit Sela
>            Assignee: Amit Sela
>
> The SDK's {{streaming}} tests actually use a {{BoundedReadFromUnboundedSource}} while "forcing" a streaming pipeline (although the input is {{Read.Bounded}}).
> The {{TestSparkRunner}} should be able to use the underlying {{UnboundedSource}} to execute a streaming pipeline.


--
This message was sent by Atlassian JIRA
(v6.3.4#6332)