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The conversion from velox MapVector to Arrow MapVector doesn't satisfy the constraint of Arrow in Java #11204

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whutjs opened this issue Oct 9, 2024 · 1 comment

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bug triage

whutjs commented Oct 9, 2024 •

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Bug description

When velox convert the MapVector to Arrow MapVector, velox will set the flag of MapVector to nullable:

velox/velox/vector/arrow/Bridge.cpp

Line 1388 in acd5717

arrowSchema.flags = ARROW_FLAG_NULLABLE;

However, in the implementation of arrow-java, MapVector is not allowed to be nullable, otherwise an exception is throwed:
https://github.com/apache/arrow/blob/d4516c5386f84619dfdf2a9f72fed6d7df89704c/java/vector/src/main/java/org/apache/arrow/vector/complex/MapVector.java#L98

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NONE

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whutjs added bug triage labels

whutjs mentioned this issue

Fix nullable bug of Arrow MapVector in Bridge.cpp #11214

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whutjs commented Oct 10, 2024 •

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@pedroerp Would you please take a look at this?

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