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Posted to dev@predictionio.apache.org by "Naoki Takezoe (JIRA)" <ji...@apache.org> on 2018/10/12 16:07:00 UTC

[jira] [Created] (PIO-182) Add asynchronous (non-blocking) methods to LEventStore

Naoki Takezoe created PIO-182:
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             Summary: 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


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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