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https://issues.apache.org/jira/browse/FLINK-2236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14711158#comment-14711158
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Ufuk Celebi commented on FLINK-2236:
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Changed fix version to 0.10 as it is changing core behaviour and is not a bug
fix.
> RowSerializer and CaseClassComparator are not in sync regarding Null-Values
> ---------------------------------------------------------------------------
>
> Key: FLINK-2236
> URL: https://issues.apache.org/jira/browse/FLINK-2236
> Project: Flink
> Issue Type: Bug
> Reporter: Aljoscha Krettek
> Priority: Blocker
> Fix For: 0.10
>
>
> The RowSerializer was recently updated to allow it to handle null values.
> This changes the binary layout of the serialised data. CaseClassComparator,
> which is used for comparison, is not aware of this new layout and therefore
> fails. The problem only occurs when a key is long enough to exceed the
> normalised-key length, that's why the tests fail to notice the bug.
> I think the solution is to modify all Tuple-like serializers/comparators
> (TupleComparatorBase, CaseClassComparator, TupleSerializer,
> CaseClassSerializer, RowSerializer) to handle null-values, thus bringing the
> binary format in sync again.
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