[C++] Unable to filter DECIMAL column from ORC file about orc HOT 4 OPEN

cc @wgtmac and @stiga-huang

from orc.

Any update on this bug?

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Could you verify if the whole batch returned by row_reader->next() violates the SearchArgument? If so, there are bugs. Otherwise, it's by design.

orc::SearchArgument is used as an indicator for the reader to skip unrelated RowGroups, i.e. it's only evaluated on RowGroup level (not row-level). If the reader can't filter out a RowGroup based on the SearchArgument, it will return all rows of that RowGroup. The caller is expected to filter out rows by itself.

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@stiga-huang I tried checking the min and max value of the batch received by the row_reader->next() command. And the batch it's returned doesn't filter anything for decimal values.

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