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https://issues.apache.org/jira/browse/PIO-182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16650183#comment-16650183
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ASF GitHub Bot commented on PIO-182:
------------------------------------

takezoe opened a new pull request #482: [PIO-182] Add async methods to 
LEventStore
URL: https://github.com/apache/predictionio/pull/482
 
 
   This pull request contains following updates:
   - Add async (non-blocking) methods to `LEventStore` and `LJavaEventStore`
   - Add Scaladoc about `scala.concurrent.ExecutionContext.Implicits.global` 
which is used in blocking methods

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> Add asynchronous (non-blocking) methods to LEventStore
> ------------------------------------------------------
>
>                 Key: PIO-182
>                 URL: https://issues.apache.org/jira/browse/PIO-182
>             Project: PredictionIO
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.13.0
>            Reporter: Naoki Takezoe
>            Priority: Major
>
> The current implementation of {{LEventStore}} has only synchronous (blocking) 
> methods. Since they use {{ExecutionContext.Implicit.global}}, its parallelism 
> is limited up to the number of processors. This means engine server's 
> parallelism is also limited if we use these methods in prediction logic.
> To solve this problem, {{Future}} version of these methods should be added to 
> {{LEventStore}} and also current blocking methods should be modified to take 
> {{ExecutionContext}} (as an implicit parameter).
> See also: 
> https://lists.apache.org/thread.html/f14e4f8f29410e4585b3d8e9f646b88293a605f4716d3c4d60771854@%3Cuser.predictionio.apache.org%3E



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