[jira] [Commented] (FLINK-1326) The output serializers may consume excessive memory

["Stephan Ewen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-1326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14246587#comment-14246587 ] 

Stephan Ewen commented on FLINK-1326:
-------------------------------------

I have implemented the quickfix variant, for now.

> The output serializers may consume excessive memory
> ---------------------------------------------------
>
>                 Key: FLINK-1326
>                 URL: https://issues.apache.org/jira/browse/FLINK-1326
>             Project: Flink
>          Issue Type: Bug
>          Components: Distributed Runtime
>    Affects Versions: 0.8-incubating
>            Reporter: Stephan Ewen
>            Assignee: Stephan Ewen
>
> The SpanningRecordSerializer creates large byte arrays to buffer records during serialization. Since they never release the records, they may occupy a large amount of memory. Currently, we use one per output partition, which is due to the original architecture.
> There are two ways to fix this:
>  1. Use only one serializer per output, rather than one per output partition. This is the preferable way in the long run anyways.
>  2. Release the arrays in the serializer (quick fix).



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