Zoltán Borók-Nagy created IMPALA-13138:
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Summary: 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
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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