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https://issues.apache.org/jira/browse/IMPALA-13138?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zoltán Borók-Nagy resolved IMPALA-13138.
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Fix Version/s: Impala 4.5.0
Resolution: Fixed
> Never smallify existing StringValue objects, only new ones during DeepCopy
> --------------------------------------------------------------------------
>
> Key: IMPALA-13138
> URL: https://issues.apache.org/jira/browse/IMPALA-13138
> Project: IMPALA
> Issue Type: Bug
> Reporter: Zoltán Borók-Nagy
> Assignee: Zoltán Borók-Nagy
> Priority: Critical
> Fix For: Impala 4.5.0
>
>
> Currently we have the following problematic line:
> [https://github.com/apache/impala/blob/880690c7bd46e6af058d8a669bea41af4a131049/be/src/runtime/buffered-tuple-stream.cc#L968]
> It modifies the string value of an existing tuple and it can corrupt the
> BufferedTupleStream.
> We should only smallify string values during deepcopy, and only the target
> string value, never the source.
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