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https://issues.apache.org/jira/browse/FLINK-3321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gabor Gevay updated FLINK-3321:
-------------------------------
    Labels: starter  (was: )

> TupleSerializerBase.getLength should know the length when all fields know it
> ----------------------------------------------------------------------------
>
>                 Key: FLINK-3321
>                 URL: https://issues.apache.org/jira/browse/FLINK-3321
>             Project: Flink
>          Issue Type: Improvement
>          Components: Java API
>            Reporter: Gabor Gevay
>            Priority: Minor
>              Labels: starter
>
> TupleSerializerBase.getLength currently always returns -1, but it could 
> actually know the length, when all the field serializers know their lengths 
> (since no null can appear anywhere in Tuples, nor can a subclass of Tuple 
> with additional fields appear).
> (The serializer knowing the exact size has various performance benefits, for 
> example see FixedLengthRecordSorter, or 
> CompactingHashTable.getInitialTableSize.)



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