tree af3120b7fa7176fcea2619c71b2d81954f0575b3
parent a8c00d8d9b4fa8527bb78523a318bd5da96ebf15
author Gian Merlino <gianmerlino@gmail.com> 1620401830 -0700
committer GitHub <noreply@github.com> 1620401830 -0700
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Fix vectorized cardinality bug on certain string columns. (#11199)

* Fix vectorized cardinality bug on certain string columns.

Fixes a bug introduced in #11182, related to the fact that in some cases,
ColumnProcessors.makeVectorProcessor will call "makeObjectProcessor"
instead of "makeSingleValueDimensionProcessor" or
"makeMultiValueDimensionProcessor". CardinalityVectorProcessorFactory
improperly ignored calls to "makeObjectProcessor".

In addition to fixing the bug, I added this detail to the javadocs for
VectorColumnProcessorFactory, to prevent others from running into the
same thing in the future. They do not currently call out this case.

* Improve test coverage.

* Additional fixes.