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Posted to issues@flink.apache.org by "Greg Hogan (JIRA)" <ji...@apache.org> on 2015/10/22 15:30:27 UTC

[jira] [Commented] (FLINK-2895) Duplicate immutable object creation

    [ https://issues.apache.org/jira/browse/FLINK-2895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14969154#comment-14969154 ] 

Greg Hogan commented on FLINK-2895:
-----------------------------------

With immutable objects, when object reuse is enabled a single unused object is created. When object reuse is disabled we are creating an unused object for every object deserialization.

> Duplicate immutable object creation
> -----------------------------------
>
>                 Key: FLINK-2895
>                 URL: https://issues.apache.org/jira/browse/FLINK-2895
>             Project: Flink
>          Issue Type: Improvement
>          Components: Distributed Runtime
>    Affects Versions: 0.10
>            Reporter: Greg Hogan
>            Assignee: Greg Hogan
>            Priority: Minor
>
> Inverse of FLINK-2724. When object reuse is disabled a few operators are creating and passing objects locally. In the case of immutable objects these will be discarded by the {{TypeSerializer}} when deserializing.



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